ik0902 report final reduced

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  • 8/10/2019 Ik0902 Report Final Reduced

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    !"P"# 89F; Q;4;F4'7. R75%0; """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" """""" #P!"P"! =D9M; $&7F;22'.M R75%0;"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""" #P

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    +=1+ '%%*/ +=# ?%/+ 71?)')1. $)+= @%&

    E%& 31> &-'%1( @%&. -=%+% )> +=# D13#B%%*5 /#>( )+ +% @%&. 7.)#>( 4)1 B'

    +%%+=5 -.)>+ )+ 4)1 /%?# '%31' -=%+% -.)>+)>0 /+%.#

  • 8/10/2019 Ik0902 Report Final Reduced

    12/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone ==

    :4:4@

    =/6,M R/+( L /#3%>(/ '%>0A

    K%/+ 01?#/ -.#/#>+ )>/+.&3+)%>/ )> +=# 7%.? %7 1 4#.B 1>( F&)3*'@ (.%- +=#

    -'1@#. )>+% +=# /)+&1+)%> $=#.# +=#@ ?&/+ -#.7%.? /1)( 4#.BA

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    &>)F )6=%># 7#1+&.#/ 31> B# &/#( )> +=# 01?# (#/)0>A

    :4:49

    R>%0 +=# /3.##>5 /=1*)>0 +=# -=%>#5

    /')()>0 +=# #>#.0@ B1. j#+3A

    9+ 31> &+)')`# +=# 7#1+&.#/ -.%4)(#(5 ')*# Q;M B&)'+e)> 31?#.15 133#'#.%?#+#.5

    ?&'+)e+%&3=j#+3A

    C=#.# )/ >% /&3= 01?# +=1+ &/#/ +=# 31?#.1 +% -'1@ 01?# )> +=# S-- M+%.#

    @#+A 9+ $%&'( B# 1 B.1>( >#$ )(#1 )> (#/)0>)>0 01?# )> )6=%>#A

  • 8/10/2019 Ik0902 Report Final Reduced

    13/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone =9

    *"78(/.9 :&2(6/ ,; 0?

    S?%>0 +=# )(#1/ +=1+ $# =14# B.1)>/+%.?#(5 +=#@ /=1.# /%?# 3%??%> 7#1+&.#/5 ')*#

    &/)>0 +=# B&)'+e)> 4)(#% 31?#.1 1>( 713# (#+#3+)%>A H&. +1.0#+ )/ +% (#4#'%- 1>

    1--')31+)%> +=1+ )/ %.)0)>1'5 ?#1>$=)'#5 #>+#.+1)>)>0A

    :4@43

    SA("818"/,8%$ %1 8=>%$( A>%,%*6/A>8" /AA'8"/,8%$ T SU!=K

    5$,6%)7",8%$

    C=# $#''e(#4#'%-#( )6=%>#5 &>(%&B+#('@5 )/ +=# &/#.e7.)#>(')#/+ ?%B)'# (#4)3#

    #4#. #,)/+#(A C% ?1*# )6=%># +% B# 1 ?%.# 3%?-.#=#>/)4# (#4)3#5 1 >#$ )6=%>#

    -=%+% 1--')31+)%>5 M:S6T5 )/ 0%)>0 +% B# )>+.%(&3#( 1 .#1'e+)?# 713# +.13*)>0

    31?#.1 +% 1'' )6=%># &/#./A M:S6T )/ 1 -=%+% #()+)>0 +%%' +=1+ 31> 0)4# &/#. 1 7&>

    #,-#.)#>3#A ")+= +=# 1&+% 713#e+.13*)>0 31?#.15 &/#. 31> #1/)'@ +1*# >)3# />1-

    /=%+/ $)+= +=#). 7.)#>(/ 1+ 1>@$=#.# 1>@+)?#T O#/)(#/5 &/#. 31> 1'/% /#'#3+ +=#

    -=%+% 7.%? +=# 1'B&? %. +1*# %># B@ &/)>0 +=# B&)'+e)> )6=%># 31?#.1A ")+= +=#

    713# )(#>+)7)31+)%> +#3=>%'%0@5 &/#. 31> 1(( -=%+% #()+)>0 #77#3+ #1/)'@ 1>(

    3.#1+# 7&>>@ 713# -=%+%?%>+10#/A

    S-1.+ 7.%? +=# 1&+%?1+)3 713# (#+#3+)%> 7#1+&.#/5 +% +.)? &- @%&. -=%+%/5

    M:S6T 1'/% 1''%$ &/#. +% (#3%.1+# +=#). -=%+% $)+= ()77#.#>+ 7.1?#/ %. /+1?-/A

    S7+#. &/#. 7)>)/=)>0 +=# (#3%.1+)%>5 +=#@ 31> -&B')/= +=#). -=%+% +% 713#B%%* B@

    &-'%1()>0 )+ %. /=1.# )+ +% +=#). 7.)#>(/ +=.%&0= #?1)'A

  • 8/10/2019 Ik0902 Report Final Reduced

    14/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone =L

    V0W(",8F(

    C% 1''%$ &/#. +% #>2%@ 1>( =14)>0 7&> $=#> +1*)>0 -=%+%/

    C% 1''%$ &/#. +% 3.#1+# 7&>>@ -=%+% #()+ -=%+%/ 1>( 1(( /%?# #77#3+ %>

    )+

    C% 1''%$ &/#. +% /=1.# -=%+%/ %> D13#B%%* %. +=.%&0= #?1)'

    ./6*(, O(/,76(0 1>( 0 %7 +=# -=%+%

    M+1+)3 713# (#+#3+)%> %> 6=%+%

    S(41>3#( 7#1+&.#/

    D13# (#+#3+)%> %> /+1+)3 -=%+% aM)>0'# D13#kK&'+) D13#/c

    ^#1'e+)?# 713# +.13*)>0 31?#.1

    9?10# Y1@#.)>0 7%. 1(()>0 /+1?-/5 7.1?#/ 1>( +#,+ B%,#/

    D)'+#.)>0

    ],-%.+ +% 713#B%%*

    M#>( +=# -=%+% +=.%&0= #?1)'/

  • 8/10/2019 Ik0902 Report Final Reduced

    15/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone =M

    *"@

    A,1B.'(2,/ C&-)&&/ -D& 2(1(9.' BD,-, .BB9(E.-(,/2 ./4 ,F' -.'6&-

    .BB9(E.-(,/G 0?

    D#1+&.#/ k S--')31+)%>/ =768K =>%,%O7$8/ =%'/68P( SU!=K

    S(()>0 D.1?# ! ! !

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    D13# R#+#3+)%> a%> /#.4#.c !

    D13# R#+#3+)%> a%> )6=%>#c !

    ^#1' C)?# D13# C.13*)>0

  • 8/10/2019 Ik0902 Report Final Reduced

    16/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone =N

    *"H

    0I2-&1 ='ED(-&E-F'&

    6=%+% )/ -1//#( 7.%? +=# -=%+% ')B.1.@ %. +=# 31?#.1 1/ +=# )?10# /%&.3#5 +=# )?10# )/

    +=#> -1//#( +% +=# -.%0.1?A D)./+5 +=# )?10# $)'' &>(#.0% +=# 713# (#+#3+)%> -.%3#// +%

    '%31+# +=# 713# %> +=# -=%+%A S7+#. +=1+5 +=# )?10# $)'' B# -1//#( +% +=# )?10#

    -.%3#//%. +% #()+ +=# )?10# #77#3+ %> +=# -=%+%A C=# -.%3#//#( )?10# $)'' +=#> B#

    -1//#( +% +=# /3.##> 7%. ()/-'1@A D&.+=#.?%.#5 )+ $)'' 1'/% B# -1//#( +% +=# -=%+% ')B.1.@

    +% /14# +=# >#$ )?10#A C=# -.%3#//#( )?10# 31> 1'/% B# #,-%.+#( +% D13#B%%* 1>(

    #?1)'A

  • 8/10/2019 Ik0902 Report Final Reduced

    17/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone =O

    *"J

    +,4F9&2 4&2(6/

    :4?43

    O/"( ;(,(",8%$ X%)7'(

    9> +=)/ ?%(&'#5 +=# %B2#3+)4# 7%. +=)/ ?%(&'# )/ +% (#+#3+ 713# )> +=# -=%+%A 9+

    $)'' 7)./+ (% /%?# -.#-.%3#//)>0 2%B/ ')*# .#/)`)>0 +=# -=%+% 1>( +&.>)>0 +=#

    )?10# )>+% 0.#@e/31'#A C=#> )+ $)'' /+1.+ +=# 713# (#+#3+)%> -.%3#//5 $=)3= )/

    '%31+)>0 +=# 713# %. 713#/ $)+=)> 1> )?10#A 9+ $)'' -1// +=# )?10# 1>( +=#

    '%31+)%> %7 +=# 713#/ +% +=# )?10# -.%3#//)>0 ?%(&'# 7%. 7&.+=#. -.%3#//A

    :4?4:

    5+/*( =6%"(('#/ 1'' +=# )?10# -.%3#//)>0 $%.*5 )>3'&()>0 )?10# '1@#.)>0

    1>( 7)'+#.)>0A 9?10# '1@#.)>0 31> 1''%$ +=# &/#. +% 1(( +=# /+1?-/5 7.1?#/ %>

    +=# -=%+% B@ %4#.'1@ +=# /+1?-/ )?10# 1>( +=# -=%+%A 9+ )/ 1'/% .#/-%>/)B'# 7%.

    +=# )?10# 7)'+#.)>0 7#1+&.#A 9+ )>3'&(#/ 3%'%&. 3%..#3+)%> /&3= 1/ B.)0=+>#// 1>(

    3%>+.1/+ 1(2&/+?#>+/ %. 3%'%&. +.1>/'1+)%> +% 1 ()77#.#>+ 3%'%&. /-13#A

    S7+#. #()+)>0 +=# -=%+%5 )+d/ .#/-%>/)B'# 7%. -1//)>0 +=# -.%3#//#( )?10# +% +=#

    /3.##> 7%. ()/-'1@5 -=%+% ')B.1.@ 7%. /14)>0 +=# )?10#5 D13#B%%* 7%. -&B')/=)>0 )+

    1>( #e?1)' /@/+#? +% /#>( )+ 4)1 #e?1)'A

  • 8/10/2019 Ik0902 Report Final Reduced

    18/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone =P

    *"K

    L2&' 3/-&';.E& :&2(6/

  • 8/10/2019 Ik0902 Report Final Reduced

    19/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone =Q

    *"M

    >',N&E- 0ED&4F9&

    X%$,> Y((#.% ;%

    "##* G e^#4)#$ %> +=# +%- )6=%># 1--')31+)%>/ 141)'1B'# %> )C&>#/

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    "##* J e 9(#1/ O.1)>/+%.?)>0

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    M#-+#?B#.

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    e 9?-'#?#>+ +=# &/#.e)>+#.713#

    "##* L e 9?-'#?#>+ /)?-'# )?10# #()+)>0 7#1+&.#

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    (#+#3+)%>

    "##* N eM+&(@ H-#> 6 K13

    e 9?-'#?#>+ 713# (#+#3+)%> 7#1+&.# %> /+1+)3 )?10#

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    H3+%B#.

    "##* W e 9?-'#?#>+ 713# (#+#3+)%> 7#1+&.# %> /+1+)3 )?10#"##* X e C#/+)>0 %> )6=%># /)?&'1+%.

    "##* GP e 9?-%.+ +=# -.%0.1? +% )6=%>#

    eC#/+)>0 %> )6=%># aB%+= )6=%># Q;M 1>( Q;c

    e 9?-'#?#>+ )?10# '1@#.)>0 7#1+&.#

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    :%4#?B#.

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    e

    M3=#(&'# +=# 7&.+=#. +1/*/ )> +=# >#,+ /#?#/+#.

  • 8/10/2019 Ik0902 Report Final Reduced

    20/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone =;

    S(A,(+0(6 V",%0(6 U%F(+0(6 ;("(+0(6^#4)#$ 1>( K1.*#+ ^#/#1.3=

    S--')31+)%> R#/)0>

    V/#.e9>+#.713# R#/)0>

    ;(/ R#/)0>

    V/#.e9>+#.713# 9?-'#?#>+1+)%>

    M)?-'# -=%+% #()+)>0 7#1+&.#

    )?-'#?#>+1+)%>D13# (#+#3+)%> 7#1+&.#

    )?-'#?#>+1+)%>9?10# Y1@#.)>0 7#1+&.#

    )?-'#?#>+1+)%>

    5+A'(+($,/,8

    %$ =>/0 )3%>

    C#/+)>0 %> )6=%># /)?&'1+%.

    C#/+)>0 %> )6=%># Q;M 1>( Q;

    .(/#?#>+ 1>( S(2&/+?#>+

    R%3&?#>+1+)%>G(A%6,

    ^#4)#$ %> -.%0.#//

  • 8/10/2019 Ik0902 Report Final Reduced

    21/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone 9:

    *"O

    0F11.'I ,; 8('2- P&'1

    O@ +=# #>( %7 /#?#/+#. %>#5 $# ?1>10#( +% (#4#'%-#(

    M:S6T 9+ )/ 1 -=%+% 1--')31+)%> +=1+ 1''%$/ &/#./ +% -)3*

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    +=# #>(A S'+=%&0= )+ )/ >%+ 1 3%?-'#+#( 4#./)%>5 )+ /+)''

    =1( /%?# /)0>)7)31>+ 7#1+&.#A "# '#1.>#( 1 '%+ 7.%? +=#

    )?-'#?#>+1+)%> -.%3#// 1>( )+ 13+&1''@ 0)4# &/ 1 $=%'#

    -)3+&.# %7 +=# (#4#'%-?#>+ -.%3#// 7.%? (#/)0> +% )?-'#?#>+1+)%>5 7.%? +#/+)>0 +%

    #>=1>3#?#>+ 1>( .#7)>#?#>+A

    O(/,76(< 8+A'(+($,()

    N%/) 8+/*( 16%+ ,>( '806/6M

    5$Z/AA A>%,% ,/#8$* 0M "/+(6/

    O/"( )(,(",8%$ [X7',8Z1/"(( 1/"( '%"/,8%$

    !)) )811(6($, 8+/*(< [>/,\ %$,% ,>( A>%,%

    S/F( 8+/*( ,% ,>( A>%,% '806/6M

  • 8/10/2019 Ik0902 Report Final Reduced

    22/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone 9=

  • 8/10/2019 Ik0902 Report Final Reduced

    23/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone 99

  • 8/10/2019 Ik0902 Report Final Reduced

    24/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone 9L

    *"!Q

    (>D,/& =BB9(E.-(,/ $%&'%(&)

    S/ ?#>+)%>#( )> +=# -.#4)%&/ -10#/5 $# 3%?-'#+#( 1 /)?-'# 1--')31+)%> +=1+ 31> (#+#3+

    +=# 713# '%31+)%> 1>( 1(( ()77#.#>+ =1+/ 133%.()>0'@ )> +=# /#?#/+#. %>#A 9> +=)/

    /#?#/+#.5 $# (#3)(#( +% /+#- &- %&. 1--')31+)%> +% >#,+ '#4#' B@ #>=1>3)>0 )+ +% 1

    4).+&1' ?1*#%4#. 1--')31+)%>A

    O#7%.# 1?#>()>0 +=# (#/)0> %7 %&. )6=%># 1--')31+)%>5 $# =1( ?##+)>0 $)+= %&.

    /&-#.4)/%. 1>( $# 1'' 10.##( +=1+ )+ )/ 1 0%%( )(#1 +% #>=1>3# )+ +% 1 ?1*#%4#.

    1--')31+)%>A C% =14# 1 $=%'# -)3+&.# %7 4).+&1' ?1*#%4#. 1--')31+)%> 1>( +=# &/#.

    )>+#.713#5 $# /-#>+ /%?# +)?# +% '%%* )>+% +=.## ()77#.#>+ -%-&'1. 4).+&1' ?1*#%4#.

    1--')31+)%>/ .#'#1/#( 7.%? +=# )C&>#/ S-- M+%.#A \)1 +=# 3%?-1.)/%> %7 +=# /+.#>0+=/

    1>( $#1*>#//#/ B#+$##> ()77#.#>+ 1--')31+)%>/ 1>( +=# $1@/ +=#@ 1.# )?-'#?#>+#(5

    $# ?1>10#( +% (#/)0> 1 B#++#. %># +=1+ 31> )>3'&(# +=# /+.#>0+= %7 +=#? 1>( /%'4#

    +=#). $#1*>#//#/ 1+ +=# /1?# +)?#A

    C=# .#4)#$#( ?1*#%4#. 1--')31+)%>/ 1.# h1). K1*#%4#.5 6=%+% K1*#%4#. 1>( )K1*#&-

    V>')?)+#( Z :#4#. D%.0%+ #4#.@ ?1*#&- B.1>( 1>( 3%'%. @%& %$>T

  • 8/10/2019 Ik0902 Report Final Reduced

    25/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone 9M

    :43I43

    Q/86 X/#(VF(6 0M .%7"> !AA0&10#/ 1>( 1''%$/ &/#. +% 7)>( =)/k=#. B#/+

    =1)./+@'#A D)./+5 &/#. 31> -)3* 1 -=%+% 7.%? ')B.1.@ %.

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    =1)./+@'#/ 7%. B%+= $%?#> 1>( ?#>5 1(2&/+ =)/k=#.

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    -.#4)#$ 31> B# /14#( 1>( /=1.#( $)+= =)/k=#. 7.)#>(/ +=.%&0= 713#B%%*A

    C=%&0= +=#.# 1.# 1 '%+ %7 =1)./+@'#/ +% 3=%%/# 7.%?5 @#+5 +=# #77#3+ )/ >%+ 1/ 0%%(

    1/ )+ ?#>+)%>#(A 9+ +1*#/ +)?# +% 3=1>0# +=# /+@'#/ 1>( )>(##( =1.( +% 1(2&/+ +=#

    -=%+% +% 7)+ +=# =1)./+@'#A

  • 8/10/2019 Ik0902 Report Final Reduced

    26/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone 9N

    :43I4: =>%,% X/#(%F(6 0M G(/''7

  • 8/10/2019 Ik0902 Report Final Reduced

    27/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone 9O

    :43I4@ 8X/#(7A ]$'8+8,() T U(F(6 1%6*%, (F(6M +/#(7A 06/$) /$) "%'%6 M%7

    %&$K 0M ;/ .(">$%'%*8(')?)+#( 1''%$/ &/#. +% /14# 1'' +=# ?1*#&-

    %. 3%/?#+)3 B.1>( 1>( 3%'%. )>/)(# +=# )6=%>#A

    9>/+#1( %7 /14)>0 2&/+ %># ')-/+)3* %. 2&/+ %># ?1/31.15

    >%$ &/#. 31> =14# &>')?)+#( ')-/+)3*/ B.1>(5 3%'%.

    1>( >%+#/A 9+ 1'/% 1''%$/ &/#. +% /=1.# =#. 714%&.)+#

    ?1*#&- %. 3%/?#+)3/ 4)1 #?1)'Ah%$#4#.5 +=)/ 1--')31+)%> =1/ %>'@ 4#.@ 7#$ 7#1+&.#/5 17+#. 1''5 )+ )/ %>'@ 1 >%+#e

    +1*)>0 1--')31+)%> $)+= #?1)' 7#1+&.#A

  • 8/10/2019 Ik0902 Report Final Reduced

    28/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone 9P

    @4!AA'8"/,8%$ ;(0)>0 7.%? '%>0 =1).

    +% /=%.+ =1).5 /+.1)0=+ =1). +% 3&.'@ =1).A

    C=)/ 31> =#'- &/#. +% =14# 1 -.#4)#$ %7 +=# (#/).#( =1)./+@'# +% /## )7 )+ /&)+/

    @%&A

    C=# #77#3+/ 1.# 3=%/#> B#7%.# +=# &/#. +1*#/ +=# -)3+&.#5 1>( +=# -.#4)#$ /=%$/

    +=# #77#3+ 1'.#1(@ 1--')#( B#7%.# +=# &/#. /14#/ +=# -=%+% %. 4)(#%A

  • 8/10/2019 Ik0902 Report Final Reduced

    29/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone 9Q

    @434@

    L( ,>( 2>8$(5 &>')*#

    6=%+%D&>)15 )+ (%#/>d+ >##( +=# &/# %7 )>+#.>#+A

    E%& 31> #)+=#. /#'#3+ @%&. =#.% B@ @%&./#'7 H^ +=# /@/+#? 31> 7)>( +=# =#.% +=1+

    '%%*/ +=# ?%/+ 71?)')1. $)+= @%&

    E%& 31> &-'%1( @%&. -=%+% )> +=# D13#B%%*5 /#>( )+ +% @%&. 7.)#>( 4)1 B'

    +%%+=5 -.)>+ )+ 4)1 /%?# '%31' -=%+% -.)>+)>0 /+%.#

  • 8/10/2019 Ik0902 Report Final Reduced

    30/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone 9;

    7"*

    8(/.9 :&2(6/

    S?%>0 +=# )(#1/ +=1+ $# =14# B.1)>/+%.?#(5 $# 31> B&)'( 1(%-+ +=# )(#1 %7 B&)'()>0

    +=# 1--')31+)%>5 fC=# h1+ M=%-gA S'' $# >##( +% (% )/ +% .#-'13# +=# %+=#. +=1> $%.*)>0

    %> 1 #1/)#. 1--.%13=5 $# (#3)(#( +% -)3* &- +=)/ 0.#1+ %--%.+&>)+@ 1>( 3=1''#>0# +%

    ?1*# 1 ?1*#%4#. 1--')31+)%>A Y)*# '1/+ /#?#/+#.5 %&. +1.0#+ )/ /+)'' +% (#4#'%- 1>

    1--')31+)%> +=1+ )/ %.)0)>1'5 ?#1>$=)'#5 #>+#.+1)>)>0A 9> +=)/ /#?#/+#.5 %&. 7)>1' (#/)0> )/

    +% (#4#'%- 1 4).+&1' ?1*#%4#. 1--')31+)%> +=1+ >%+ %>'@ )>3'&(#/ &/#7&' 1>( =1>(@

    7#1+&.#/5 B&+ 1'/% 0)4# &/#./ 1> 1$#/%?# 1>( 7&> #,-#.)#>3#A

    @4:43

    S(A"818"/,8%$ %1 8=>%$( +/#(%F(6 /AA'8"/,8%$ T O/"(N%%#

    5$,6%)7",8%$

    C=# $#''e(#4#'%-#( )6=%>#5 &>(%&B+#('@5 )/ +=# &/#.e7.)#>(')#/+ ?%B)'# (#4)3#

    #4#. #,)/+#(A C% ?1*# )6=%># +% B# 1 ?%.# 3%?-.#=#>/)4# (#4)3#5 1 4).+&1'

    ?1*#%4#. 1--')31+)%>5 D13#Y%%*5 )/ 0%)>0 +% B# )>+.%(&3#( +% 1'' )6=%># &/#./A

    D13#Y%%* )/ 1 -=%+% #()+)>0 +%%' +=1+ 31> 0)4# &/#. 1 +%+1' 7&> #,-#.)#>3#A ")+=

    +=# 1&+% 713#e(#+#3+)%>5 #@#e(#+#3+)%> 1>( ?%&+=e(#+#3+)%> +#3=>%'%0@5 &/#.

    31> #1/)'@ 1--'@ ()77#.#>+ *)>(/ %7 ?1*#&- %>+% +=#). 713# +% 3.#1+# 1 3%%' '%%*

    1>( /14# +=# '%%* +% +=#). -=%+% ')B.1.@A D%. )>/+1>3#5 &/#. 31> 7)./+ -)3* 1 -=%+%

    7.%? +=# ')B.1.@ %. +1*# %># B@ 31?#.1A V/#. 31> /)?-'@ +1- +=# ')-/+)3* B&++%>

    1>( -)3* =#. 714%&.)+# ')-/+)3* 3%'%&. %> +=# 3%'%&. -1'#++#A C=# /@/+#? $)'' +=#>

    1&+%?1+)31''@ (#+#3+ +=# ')- '%31+)%> %> +=# -=%+% 1>( &/#. 31> 7&.+=#. 1(2&/+

    +=# /)`# 1>( -%/+)%> %7 +=# ')-/+)3* 1--')#( )7 >##(#(A V/#. 31> 1'/% /#'#3+ +=#

    3%'%. %> +=# 3%'%. -1'#++# +% 3=1>0# +=# ')-/+)3* 3%'%. 1>( +=# -.#4)#$ $)'' B#

    /=%$> )??#()1+#'@A C=# #@# /=1(%$ B&++%> 1>( B'&/= B&++%> $%.*/ /)?)'1.'@

    ')*# +=# ')-/+)3* B&++%>A C=# #@# /=1(%$ B&++%> 1>( +=# B'&/= B&++%> 31> (#+#3+

    +=# #@# 1>( +=# 713# '%31+)%> .#/-#3+)4#'@A V/#. 31> /14#( 1'' +=# -.%(&3+ /14#(

    +% 1 >%+# $)+= +=# 7)>)/=#( -=%+% )> +=# -=%+% ')B.1.@ )> +=# #>(A

  • 8/10/2019 Ik0902 Report Final Reduced

    31/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone L:

    9+ )/ 1> #,3#''#>+ 1--')31+)%> 7%. 1'' +=# 0).'/ +=1+ $1>+ +% 7)>( %&+ =#. B#/+ -)3*

    B#7%.# 0%)>0 +% +=# (.&0 /+%.# +% 0#+ =#. >#$ ')-/+)3*5 #@# /=1(%$ -1'#++# %.B'&/=A V>')*# %+=#. ?1*#&- 1--')31+)%>5 1'' +=# 3%'%&./ &/#( )> %&. 1--')31+)%>

    1.# -)3*#( 7.%? +=# 71?%&/ 3%/?#+)3 B.1>(5 O%BB) O.%$>

    13+&1''@ B&@ +=# -.%(&3+ 133%.()>0 +% +=# ')/+ /14#(T 9/>d+ )+ /% 3%>4#>)#>+l

    D%. +=# B%@/5 )+ $%&'( B# 1 7&> 1--')31+)%> 7%. @%& +%%T E%& 31> +1*# 1 -)3+&.# %7

    @%&. B&((@ 1>( +.@ +% -&+ ?1*#&- %>+% =)/ 713#T @%& )?10)># =%$ @%&.

    7.)#>( '%%*/ ')*# 17+#. -&++)>0 %> +=# #@# /=1(%$l 9+ $%&'( B# 1> 1B/%'&+# 7&>

    #,-#.)#>3#T

    V0W(",8F(

    C% 1''%$ &/#. +% #>2%@ 1>( =14# 7&>

    C% 1''%$ &/#. +% +.@ ()77#.#>+ ?1*#&- %> B#7%.# B&@)>0 +=# 13+&1'

    -.%(&3+/

    C% 1''%$ &/#. +% /=1.# +=# -=%+% 1>( +=# &/#( -.%(&3+ )>7%.?1+)%>

    +=.%&0= #?1)'

    ./6*(, ]

  • 8/10/2019 Ik0902 Report Final Reduced

    32/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone L=

    ./6*(, O(/,76(0 +=1+ 1''%$/ ?%4#?#>+ 1>( .#/)`# B@ +%&3=

    R.1$ /=1-#/ %> +=# )?10# B@ &/)>0 3%>+.%' -%)>+/

    O'#>()>0 +=# )?10#

  • 8/10/2019 Ik0902 Report Final Reduced

    33/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone L9

    7"7

    A,1B.'(2,/ C&-)&&/ -D& 2(1(9.' BD,-, .BB9(E.-(,/2 ./4 ,F' -.'6&-

    .BB9(E.-(,/G 8.E&R,,S

    D#1+&.#/ k S--')31+)%>/ Q/86

    X/#(%F(6

    =>%,%

    X/#(%F(6

    8X/#(7A

    ]$'8+8,()

    O/"(N%%#

    9>e1-- 6=%+% C1*)>0 ! ! !

    Y%1( )?10# 7.%? ')B.1.@ ! ! !

    M14# )?10# +% ')B.1.@ ! ! !

    D13# R#+#3+)%> a%> )6=%>#c ! !

    ]@# R#+#3+)%> a%> )6=%>#c !

    K%&+= R#+#3+)%> a%> )6=%>#c !

    9?10# Y1@#.)>0 a1''%$ +%&3=

    ?%4#?#>+5 .#/)`)>0 )?10#c! !

    O'#>()>0 +=# )?10# !

    :%+#e+1*)>0 ! !

    ],-%.+ +% 713#B%%* !!

    ],-%.+ +% #?1)' ! ! !

  • 8/10/2019 Ik0902 Report Final Reduced

    34/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone LL

    7"@

    0I2-&1 ='ED(-&E-F'&

    6=%+% )/ /#'#3+#( 7.%? +=# -=%+% ')B.1.@ %. +=# 31?#.1 1/ +=# )?10# /%&.3# 1>( +=#>

    -1//#( +% +=# ?1)> -.%0.1?A R)77#.#>+ B&++%> 3')3* $)'' 0#>#.1+# ()77#.#>+ (#+#3+)%>

    /)0>1' 7%. +=# (#+#3+)%> ?%(&'#/A D%. )>/+1>3#5 +=# ')-/+)3* B&++%> 3')3* $)'' 0#>#.1+# 1

    ')- (#+#3+)%> /)0>1' +% +=# (#+#3+)%> ?%(&'#A "=#> +=# (#+#3+)%> ?%(&'# .#3#)4#/ +=#

    (#+#3+)%> /)0>1'5 +=# )?10# $)'' &>(#.0% +=# (#+#3+)%> -.%3#// +% '%31+# +=# -%/)+)%> 7%.

    713#5 #@#/5 ')-A C=#>5 +=# )?10# 1>( +=# .#/-#3+)4# '%31+)%> )>7%.?1+)%> $)'' B# -1//#(

    +% +=# )?10#e-.%3#//)>0 ?%(&'# +% #()+ +=# #77#3+ %> +=# -=%+%A C=# -.%3#//#( )?10#

    $)'' +=#> B# -1//#( +% +=# /3.##> 7%. ()/-'1@A

    D&.+=#.?%.#5 ()77#.#>+ 3%'%. B&++%> $)'' -1// +=# 3%'%. /)0>1' +% +=# )?10#e-.%3#//)>0

    ?%(&'# 7%. 3=1>0)>0 +=# 3%'%. %7 ')-/+)3*5 #@# /=1(%$ %. B'&/=A C=# 1?#>(#( )?10# $)''

    B# -1//#( +% +=# /3.##> 7%. ()/-'1@ )??#()1+#'@A

    C=# -.%3#//#( )?10# 31> B# -1//#( +% +=# -=%+% ')B.1.@ +% /14# 1/ 1 >#$ )?10# %.

    #,-%.+#( +% #?1)' 1/ 1++13=?#>+A

  • 8/10/2019 Ik0902 Report Final Reduced

    35/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone LM

    7"H

    +,4F9&2 4&2(6/

    @4D43

    ;(,(",8%$ X%)7'(

    9> +=)/ ?%(&'#5 +=# %B2#3+)4# 7%. +=)/ ?%(&'# )/ +% (#+#3+ +=# '%31+)%> 7%. ')-5

    #@#/5 1>( +=# 713# )> +=# -=%+%A 9+ $)'' 7)./+ (% /%?# -.#-.%3#//)>0 2%B/ ')*#

    .#/)`)>0 +=# -=%+% 1>( +&.>)>0 +=# )?10# )>+% 0.#@e/31'#A C=#> )+ $)'' /+1.+ +=#

    (#+#3+)%> -.%3#//5 $=)3= )/ '%31+)>0 +=# 713#5 ')- %. #@#/ $)+=)> 1> )?10#A 9+ $)''

    -1// +=# )?10# 1>( +=# '%31+)%> %7 +=# 133%.()>0 713)1' 7#1+&.#/ +% +=# )?10#e

    -.%3#//)>0 ?%(&'# 7%. 7&.+=#. -.%3#//A

    @4D4:

    5+/*( =6%"(('#/ 1'' +=# )?10# -.%3#//)>0 $%.*5 )>3'&()>0 )?10# '1@#.)>0

    1>( +=# +%&3= =1>(')>0A S7+#. 0#++)>0 +=# '%31+)%> %7 +=# 713)1' 7#1+&.# 7.%? +=#

    (#+#3+)%> ?%(&'# 1>( +=# 3%'%. )>7%.?1+)%> 7.%? &/#.5 +=)/ ?%(&'# $)'' %4#.'1@

    1 /#?)e+.1>/-1.#>+ )?10# '1@#. %> +%- %7 +=# -=%+% +% 13+ ')*# +=# 1--')#(

    3%/?#+)3/A C=# 3%'%. %7 +=# )?10# '1@#. $)'' 3=1>0# 133%.()>0 +% &/#. .#F&).#(A

    C=# /)`# 1>( /=1-# $)'' B# 3=1>0# 133%.()>0 +% +=# 3%>+.%' -%)>+/A

    S7+#. #()+)>0 +=# -=%+%5 )+ )/ .#/-%>/)B'# 7%. -1//)>0 +=# -.%3#//#( )?10# +% +=#

    /3.##> 7%. ()/-'1@5 -=%+% ')B.1.@ 7%. /14)>0 +=# )?10#5 #?1)' /@/+#? 1/ 1> #?1)'

    1++13=?#>+A

  • 8/10/2019 Ik0902 Report Final Reduced

    36/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone LN

    7"J

    8.E&R,,S T L2&' 3/-&';.E& :&2(6/

  • 8/10/2019 Ik0902 Report Final Reduced

    37/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone LO

    :%+# \)#$ 9>+#.713#

  • 8/10/2019 Ik0902 Report Final Reduced

    38/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone LP

    7"K

    >',N&E- 0ED&4F9&

    X%$,> Y((# !/+%.?)>0

    _1>&1.@

    "##* Q e R.17+ %7 +=# S--')31+)%> R#/)0>e R.17+ %7 +=# V/#. 9>+#.713#

    "##* I e V-(1+# +=# >#$ -.%2#3+ /-#3)7)31+)%>e 9?-'#?#>+1+)%> +=# )?10# '1@#.)>0

    "##* L e 9?-'#?#>+1+)%> +=# +%&3= ?%4#?#>+e ;#+ 71?)')1. $)+= +=# +=#%.@ 1>( 1'0%.)+=? %7 #@# (#+#3+)%>

    1>( ?%&+= (#+#3+)%>"##* N e 9?-'#?#>+1+)%> +=# #@# (#+#3+)%> 7#1+&.#

    e 9?-'#?#>+1+)%> +=# ?%&+= (#+#3+)%> 7#1+&.#

    D#B.&1.@

    "##* U e 9?-'#?#>+1+)%> +=# #@# (#+#3+)%> 7#1+&.#e 9?-'#?#>+1+)%> +=# ?%&+= (#+#3+)%> 7#1+&.#

    "##* W e 9?-'#?#>+1+)%> +=# #@# (#+#3+)%> 7#1+&.#e 9?-'#?#>+1+)%> +=# ?%&+= (#+#3+)%> 7#1+&.#

    "##* X e 9?-'#?#>+1+)%> +=# #@# (#+#3+)%> 7#1+&.#e 9?-'#?#>+1+)%> +=# ?%&+= (#+#3+)%> 7#1+&.#

    "##* GP e C#/+)>0 %> )6=%># Q; 1>( Q;Me R#B&00)>0

    "##* GG e C#/+)>0 %> )6=%># Q; 1>( Q;Me R#B&00)>0

    e V/#. )>+#.713#

    K1.3=

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    e ^#7)>#?#>+ 1>( S?#>(?#>+ %7 -.%0.1?

    e

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    "##* GI e R%3&?#>+1+)%>e ^#7)>#?#>+ 1>( S?#>(?#>+ %7 -.%0.1?

    e O&/)>#// 6'1>

  • 8/10/2019 Ik0902 Report Final Reduced

    39/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone LQ

    ^/$7/6M O(06/6M X/6"> !A68'

    ^#4)#$ %> -.%0.#// %7 G/+ C#.?^#4)#$ %> ?1*#%4#. 1--')31+)%>/

    V/#.e9>+#.713# R#/)0>

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    V/#.e9>+#.713# 9?-'#?#>+1+)%>

    # D#1+&.#

    D13# (#+#3+)%> 7#1+&.# )?-'#?#>+1+)%>

    9?10# Y1@#.)>0 7#1+&.# )?-'#?#>+1+)%>

    5+A'(+($,/

    ,8%$ =>/0

    C#/+)>0 %> )6=%># /)?&'1+%.C#/+)>0 %> )6=%># Q;M 1>( Q;

    .(/#?#>+ 1>( S(2&/+?#>+

    R%3&?#>+1+)%>G(A%6,

    O&/)>#// 6'1>

  • 8/10/2019 Ik0902 Report Final Reduced

    40/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone L;

    945+A'(+($,/,8%$ =>/3# $# =14# )?-'#?#>+#( M:S6T )> +=# '1/+ /#?#/+#.5 $# =14# 1'.#1(@ =1( /%?# )(#1

    =%$ +% &/# +=# 9>+#.713# O&)'(#. 1>( m3%(#A "# 7%&>( +=# )>+#.713# B&)'(#. )/ /)?-'# 1>(

    #1/@ +% &/#5 /% $# 3%>+)>( +% &/# 9>+#.713# O&)'(#. +% B&)'( D13#Y%%* )> +=)/ /#?#/+#.A

    D13# (#+#3+)%> &/#( )> M:S6T )/ 1'/% &/#7&' 7%. +=# )?-'#?#>+1+)%> %7 D13#Y%%*A "#

    +=#.#7%.# $)'' 1--'@ $=1+ $# =14# '#1.>#( )> /#?#/+#. %># +% B&)'( %&. 1--')31+)%>A

    C=# -.%0.1??)>0 '1>0&10# &/#( $)'' B# HB2#3+)4# ( +=# (#4#'%-)>0 -'1+7%.? $)''

    ?%/+'@ B# m3%(# 1>( 9>+#.713# O&)'(#. %> +=# K13 HMA

    9> +=# B#0)>>)>0 %7 +=# )?-'#?#>+1+)%> -=1/#5 $# ()4)(#( )+ )>+% +=.## ?1)> -1.+/[ &/#.

    )>+#.713# 3.#1+)%>5 H-#> a)>3'&(# 713# (#+#3+)%>5 ?%&+= (#+#3+)%> 1>( #@#

    (#+#3+)%>c 1>( )?10# '1@#.)>0A

  • 8/10/2019 Ik0902 Report Final Reduced

    41/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone M:

    @"!

    >.'- !U L2&' 3/-&';.E& A'&.-(,/

    O@ .#7#..)>0 +=# #,-#.)#>3# )> /#?#/+#. %># $=)'# )?-'#?#>+)>0 M:S6T5 $# 7%&>( +=1+

    9>+#.713# O&)'(#. )/ F&)+# 1 0%%( 3=%)3# 7%. 3.#1+)>0 +=# &/#. )>+#.713# )> 1 /)?-'# $1@

    $=)3= >##( >%+ ?&3= 3%(# )?-'#?#>+1+)%> =14# +% B# (%>#A S'' +=# #'#?#>+/ )> +=#

    9>+#.713# O&)'(#. 1.# /+1>(1.( $=)3= &/#./ 31> #1/)'@ 1(1-+ +%A ")+= +=# =#'- %7 +=#

    )6=%># MR8 S695 V98)+5 ?%/+ %7 +=# &/#. )>+#.713# )/ 3.#1+#( B@ &/)>0 +=# 9>+#.713#

    O&)'(#.A

    f9>+#.713# O&)'(#.g )/ 1> 1--')31+)%> 7%. (#/)0>)>0 1>( +#/+)>0 &/#. )>+#.713#A "# 31>

    &/# 9>+#.713# O&)'(#. +% 3.#1+# &/#. )>+#.713#/ +=1+ 7%''%$ +=# K13 HM m =&?1>

    )>+#.713# 0&)(#')>#/ B@ (.100)>0 &/#. )>+#.713# #'#?#>+/ 7.%? 1 -1'#++# %7 -.#(#7)>#(

    3%>+.%'/ 1>( (.%--)>0 +=#? )>+% +=# $)>(%$ %. 4)#$ +=#@ 1.# 3%>7)0&.)>0A

    D)0&.# QAGAG O1/)3 4)#$ %7 9>+#.713# O&)'(#.

  • 8/10/2019 Ik0902 Report Final Reduced

    42/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone M=

    fV98)+g -.%4)(#/ +=# 3'1//#/ >##(#( +% 3%>/+.&3+ 1>( ?1>10# 1> 1--')31+)%>d/ &/#.

    )>+#.713# 7%. )6=%># 1>( )6%( +%&3=A 9+ -.%4)(#/ 1> 1--')31+)%> %B2#3+5 #4#>+ =1>(')>05(.1$)>0 ?%(#'5 $)>(%$/5 4)#$/5 1>( 3%>+.%'/ /-#3)7)31''@ (#/)0>#( 7%. 1 +%&3= /3.##>

    &/#.e)>+#.713#A D)0&.# QAGAG )''&/+.1+#/ +=# 3'1//#/ )> +=)/ 7.1?#$%.*A

    D)0&.# QAGAJ V98)+ 3'1// =)#.1.3=@

  • 8/10/2019 Ik0902 Report Final Reduced

    43/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone M9

    ")+= +=# =#'- %7 f9>+#.713# O&)'(#.g 1>( fV98)+g5 $# B&)'+ +=# &/#. )>+#.713# 1/ +=#

    7%''%$)>0/[

  • 8/10/2019 Ik0902 Report Final Reduced

    44/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone ML

    @"*

    >.'- *U $B&/AV :&-&E-(,/

    C% /+1.+ )?-'#?#>+)>0 +=# (#+#3+)%> 7#1+&.#/5 $# =14# +% 0#+ 71?)')1. $)+= +=#1'0%.)+=? 1>( +=# (#+#3+)%> +=#%.@ %7 +=# H-#> )>

    7)0&.# QAJAGA

    D)0&.# QAJAG C=# 1'0%.)+=? 7%. H-#>

  • 8/10/2019 Ik0902 Report Final Reduced

    45/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone MM

    S+ +=# 4#.@ B#0)>>)>0 %7 (#+#3+)%> -=1/#5 $# >##( +% '%1( 1 -.#4)%&/'@ +.1)>#( 3'1//)7)#.

    31/31(# 7%. +=# 7&+&.# &/# B@ +=# (#+#3+)%> -1.+A S>( $=#.# +=# (#+#3+)%> %7 ?%&+=1>( #@#/ 1.# $%.*)>0 /)?)'1.'@A

    C=# 3'1//)7)#. 31/31(# )/ 1 h11. 3'1//)7)#.5 +=# \)%'1e_%>#/ (#+#3+%.5 $=)3= B&)'(/ 1

    B%%/+#( .#2#3+)%> 31/31(#A C=# 3'1//)7)#. 31/31(# )/ -.#e+.1)>#( $)+= +=%&/1>(/ %7

    %B2#3+ #,1?-'#/ 1>( +#>/ %7 +=%&/1>(/ %7 >%>e%B2#3+ #,1?-'#/ 1/ +.1)>)>0 (1+1 /#+A C=#

    3'1//)7)#. &/#/ +=# +=.#/=%'( %7 +=# /&?/ 1>( ()77#.#>3#/ %7 .#3+1>0&'1. .#0)%>/ %7 (1+1

    -.%(&3#( B@ 1>@ 7#1+&.# (#+#3+%.5 $=)3= ?1@ )>3'&(# +=# h11. 31/# %7 .#3+1>0'#/ %7

    0.#@e/31'# )?10# 41'/A

    ")+= +=# \)%'1e_%>#/ .#2#3+)%> 31/31(#5 $=)3= B%%/+#( +=# 3'1//)7)#.5 +=# $#1*

    3'1//)7)#./ +=1+ )+ B%%/+/ )> #13= >%(# 1.# (#3)/)%> +.##/ +=1+ %7+#> 1.# %>'@ %># '#4#'

    (##- f(#3)/)%> /+&?-/gA S (#3)/)%> /+&?- 1''%$/ 2&/+ %># (#3)/)%> %7 +=# 7%''%$)>0

    7%.?[ f9/ +=# 41' 4 %7 1 -1.+)3&'1. 7#1+&.# 7 1B%4# %. B#'%$ /%?# +=.#/=%'( +gi +=#>5 1

    f@#/g )>()31+#/ 713# 1>( 1 f>%g )>()31+#/ >% 713#[

  • 8/10/2019 Ik0902 Report Final Reduced

    46/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone MN

    C=# \)%'1e_%>#/ 3'1//)7)#. #?-'%@/ S(1O%%/+ 1+ #13= >%(# )> +=# 31/31(# +% '#1.> 1 =)0=

    (#+#3+)%> .1+# 1+ +=# 3%/+ %7 '%$ .#2#3+)%> .1+# ?&'+)e/+&?- 3'1//)7)#. 1+ #13= >%(# %7+=# 31/31(#A C=)/ 1'0%.)+=? )>3%.-%.1+#/ /#4#.1' 7#1+&.#/A

    9+ &/#/ h11.e')*# )>-&+ 7#1+&.#/[ 1 +=.#/=%'( 1--')#( +% /&?/ 1>( ()77#.#>3#/ %7

    .#3+1>0&'1. )?10# .#0)%>/A

    9+/ )>+#0.1' )?10# +#3=>)F #>1B'#/ .1-)( 3%?-&+1+)%> %7 +=# 41' %7

    .#3+1>0&'1. .#0)%>/ %. /&3= .#0)%>/ .%+1+#( IL (#0.##/A C=)/ (1+1 /+.&3+&.# )/

    &/#( +% 133#'#.1+# 3%?-&+1+)%> %7 +=# h11.e')*# )>-&+ 7#1+&.#A

    9+ &/#/ /+1+)/+)31' B%%/+)>0 +% 3.#1+# B)>1.@ a713# e >%+ 713#c 3'1//)7)31+)%> >%(#/

    3=1.13+#.)`#( B@ =)0= (#+#3+)%> 1>( $#1* .#2#3+)%>A

    9+ %.01>)`#/ +=# $#1* 3'1//)7)#. >%(#/ %7 1 .#2#3+)%> 31/31(#A

    C=# h11.e')*# 7#1+&.#/ &/#( B@ +=# 3'1//)7)#. 1.# /=%$> )> D)0&.# QAJAJA S+ 1'' /31'#/5

    +=#/# 7#1+&.#/ 7%.? +=# f.1$ ?1+#.)1'g +=1+ $)'' B# &/#( B@ +=# B%%/+#( 3'1//)7)#./A

    C=#@ 1.# .1-)('@ 3%?-&+#( 7.%? +=# )>+#0.1' )?10# .#-.#/#>+)>0 +=# %.)0)>1' 0.#@/31'#

    )?10#A

    D)0&.# QAJAJ h11.e')*# 7#1+&.#/ 7.%? +=# H-#> a+=# .#3+1>0&'1.

    1>( .%+1+#( .#0)%>/ 1.# #1/)'@ 31'3&'1+#( 7.%? +=# )>+#0.1' )?10#c[ +=# ')0=+ .#0)%> )/

    )>+#.-.#+#( 1/ f1(( +=1+ 1.#1g 1>( +=# (1.* .#0)%> 1/ f/&B+.13+ +=1+ 1.#1g

  • 8/10/2019 Ik0902 Report Final Reduced

    47/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone MO

    S'/%5 #13= 3'1//)7)#. 0.%&- )/ B%%/+#( )>+% >%(#/ %7 1 .#2#3+)%> 31/31(# 1/ /=%$> )>

    D)0&.# QAJAQA 9> +=# 7)0&.# #13= %7 +=# >%(#/ D)

    =%'(/ +=# B%%/+#( 31/31(# %7 0.%&-/ %7(#3)/)%> /+&?-/ $=)3= +.1)>#( %> +=# h11.e')*# 7#1+&.#/ 7.%? 713#/ 1>( >%>e713#/

    #,1?-'#/A K%.#%4#.5 +=# >%(#/d %.(#. )/ )> 1 1/3#>()>0 %.(#. )> +=# '#4#' %7 3%?-'#,)+@A

    C=#.#7%.#5 +=# 3%?-&+1+)%>/ 1.# ?)>)?)`#( $)+= .#2#3+)>0 #1/@ .#0)%>/ %7 +=# )?10#A

    D&.+=#.?%.#5 #13= >%(# )/ +&>#( +% =14# 1 4#.@ =)0= (#+#3+)%> .1+#A D%. #,1?-'#5 $=#>

    +.1)>)>0 %> 713#/5 1'?%/+ XXAXb %7 +=# 713#/ 1.# 7%&>( $)+= 1B%&+ LPb %7 +=# >%>e713#/

    1.# )>3%..#3+'@ f7%&>(g 1+ #13= >%(#A h%$#4#.5 +=)/ )/ 133#-+1B'# B#31&/# &/)>0 7%.

    #,1?-'# JP >%(#/ $)'' -.%4)(# 1 713# (#+#3+)%> .1+# %7 PAXXXJP)/ 1--.%,)?1+#'@ XWb 1>(

    +=# 71'/# -%/)+)4# .1+# %7 PALJP)/ 1--.%,)?1+#'@ PAPPPGb %>'@A

    D)0&.# QAJAQ C=# .#2#3+)%> 31/31(# &/#( )> +=# \)%'1e_%>#/ 3'1//)7)#.A

  • 8/10/2019 Ik0902 Report Final Reduced

    48/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone MP

    S7+#.$1.(/5 $)+= +=# -.#e+.1)>#( 3'1//)7)#. 31/31(#5 +=# 713# (#+#3+)%> -1.+ /+1.+A

    IAJAGAG

    4#.+)>0 +=# )?10# /%&.3# )>+% 0.#@e/31'# )?10#AS/ +=# 713# (#+#3+)%> -1.+ >##( +% 31'3&'1+# $)+= +=# )>+#0.1' )?10# $=)3= &/)>0

    ')0=+ .#0)%> 1>( (1.* .#0)%> 7%. 31'3&'1+)%>A C% /)?-')7@ +=# 31'3&'1+)%>5 )+ )/ B#++#. +%

    &/# 1 0.#@e/31'# )?10# )>/+#1( %7 3%'%&. )?10#A

    IAJAGAJ^#/)`)>0 +=# 0.#@ )?10#A

    C=)/ 13+)%> 31> /-##( &- +=# 7&.+=#. 713# (#+#3+)%> /+#-/ $)+= 1 /?1''#. 1>( /)?-'#.

    )?10#A

    IAJAGAQ

    ]F&1')`)>0 =)/+%0.1?

    S/ +=# )>+#0.1' )?10# 7#1+&.#/ 1.# B1/#( %> ()77#.#>3#/ %7 .#3+1>0'# .#0)%>/A C=#.#

    )/ 1 >##( 7%. B1'1>3)>0 +=# B.)0=+>#// 41'/ 7%. -.#4#>+)>0 +=# ()77#.#>3#/ B#)>0

    /*#$#( B@ %4#.1'' ')0=+)>0 %. #,-%/&.# %7 +=# )?10#/A

    IAJAGAI/ 7%&>( %B2#3+ .#3+1>0'#/ 1/ 1 /#F>3# %B2#3+ )>0 >##( +% B# 3'#1.#(A

  • 8/10/2019 Ik0902 Report Final Reduced

    49/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone MQ

    IAJAGALR#+#3+)>0 713#/

    C=# 13+&1' 713# (#+#3+)%> -.%3#// $)'' B# +1*#> -'13#A D)./+5 +=# .#/)`#( 0.#@e/31'# )?10#5 +=# -.#e+.1)>#( 3'1//)7)#. 31/31(# 1>( +=#

    ?#?%.@ /+%.10# 7%. (#+#3+#( 713#/ $)'' B# )>-&+#( 7%. +=# 713# (#+#3+)%>

    -1.+A

    C=# /31'#n713+%. -1.1?#+#. (#+#.?)>#/ +=# /)`# %7 1 2&?- B#+$##> #13=

    /31'#i +=# =)0=#. +=# 41' +=# 71/+#. +=# 3%?-&+1+)%> +)?# B&+ 1+ +=# 3%/+

    %7 -%//)B'# ?)//#( (#+#3+)%>A

    C=# ?)>n>#)0=B%./ -1.1?#+#. 3%>+.%'/ +=# -.#4#>+)%> %7 71'/# (#+#3+)%>A

    C=)/ )/ ( +% +=# 13+&1' 713# '%31+)%> )> 1> )?10# $)'' >%.?1''@ 0#+ ?&'+)-'#

    (#+#3+)%> $)+=)> +=# /1?# 1.#1 B#31&/# +=# /31'#/ 1>( /&..%&>()>0 -),#'/

    %7+#> )>()31+# 1 713#i +=# =)0=#. +=# 41' +=# ?%.# (#+#3+)%>/ 1.# >##(#(

    7%. +=# 7)>1' (#3)/)%> %7 1 713# )> 1 /)>0'# '%31+)%>A

    C=# 7'10/ -1.1?#+#. =1/ 7%&. /#++)>0/[

    o / $)+= >% ')>#/cA

    o ( )> +=# )?10#A

    o ( )> +=# )?10# )??#()1+#'@A

    C=# ?)>n/)`# -1.1?#+#. $)'' (#+#.?)># +=# /?1''#/+ .#0)%> $=)3= +% B#

    /#1.3= 7%. 1 713#A C=# '1.0#. +=# 41' +=# 71/+#. +=# 3%?-&+1+)%> @#+5 )+ 1'/%

    '#1(/ +% +=# 3%/+ %7 ?)//)>0 /?1'' 713#/A

    IAJAGANS7+#. +=# (#+#3+)>0 713#/5 1 /#F>3# %7 (#+#3+#( 713#/ $)'' B# %B+1)>#(

    7.%? +=# 713# (#+#3+%.A ")+= +=# /#F>3# %7 (#+#3+#( 713#/5 +=# )?10# 31>

    B# &/#( 7%. 7&.+=#. )?10# -.%3#//A

  • 8/10/2019 Ik0902 Report Final Reduced

    50/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone M;

    C=#.# 1.# /%?# 1//&?-+)%>/ 7%. +=# H-#> )> %.(#. +% )>3.#1/# +=#

    133&.13@A C% )(#>+)7@ +=# 713)1' 7#1+&.#/ )> 1> )?10#5 )+ )/ >#3#//1.@ +=1+ +=# 713# %>+=# -=%+% )/ 713)>0 +% +=# 7.%>+5 $#'' ')+5 >%+ B'&..#( 1>( >%+ 3%4#.#( B@ 1>@+=)>0A

    61//-%.+ -=%+% )/ 1 0%%( #,1?-'# 7%. +=# (#+#3+)%>A 6.#7#.1B'@5 +=# -=%+%d/

    B13*0.%&>( /=%&'( B# >#&+.1'A

    O@ '#1.>)>0 +=# -1/+ #,-#.)#>3# 7.%? M:S6T5 $# 7%&>( +=1+5 (#+#3+)%> 7&>3+)%>

    +1*#/ +=# '%>0#/+ -.%3#//)>0 +)?# %7 1'' +=# 13+)%>/ )> +=# 1--')31+)%>A S'+=%&0=

    713# (#+#3+)%> =1/ 1 =)0= 133&.13@5 +=# 133&.13@ 7%. #@# (#+#3+)%> 1>( ?%&+=

    (#+#3+)%> )/ >%+ 1/ =)0= 1/ 713# (#+#3+)%>A C=)/ )/ %&+ %7 %&. #,-#3+1+)%> +=1+ )+ +1*#/

    1 '%+ %7 +)?# +% 1(2&/+ +=# +=.#/=%'(A C=# ?1)> 3%>3#.>/ 1B%&+ (#+#3+)%> 713)1'

    7#1+&.#/ $%&'( B# +=# '%$ 133&.13@ )> #@# 1>( ?%&+= (#+#3+)%> 1>( '%>0

    -.%3#//)>0 +)?# -.%B'#?A

  • 8/10/2019 Ik0902 Report Final Reduced

    51/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone N:

    @"7

    >.'- 7U 31.6& R.I&'(/6

    S7+#. +=# -.%0.1? 7%&>( %&+ +=# -%/)+)%> %7 713)1' 7#1+&.#a/c5 +=# 7#1+&.# /#F>3# 31>

    B# &/#( 7%. 7&.+=#. )?10# -.%3#//)>0A D%. )>/+1>3#/5 1(()>0 )?10#a/c %> +%- %7 +=#

    (#+#3+#( 1.#15 3.%--)>0 %&+ +=# 713# 1>( -'13# %> 1 ()77#.#>+ )?10# ')*# 6=%+%D&>)1AAA

    #+3A

    D%. M:S6T5 %># /#?#/+#. #1.')#.5 1'' +=# %4#.'1@ )?10#/ a')*#5 =1+c +=1+ $)'' B# 1((#( +%

    +=# )?10# 1.# ().#3+'@ (.1$> %>+% +=# -.#/#>3# )?10#A S7+#. +=# %4#.'1@ )?10# )/

    (.1$>5 )+ 31>d+ B# ?%4#( 1.%&>( +=# 4)#$ %. (#'#+#( 7.%? +=# 4)#$A 9>(##(5 +=#.# )/>d+

    1>@ )?10# 4)#$ +% /+%.# +=# %4#.'1@ )?10#A

    S7+#. 1?#>(?#>+5 1'' +=# %4#.'1@ )?10#/ 1.# /+%.#( 1/ +=# /&B4)#$/ %7 +=# )?10#A 9>

    /=%.+5 1'' +=# %4#.'1@ )?10#/ 1.# +=# 3=)'(.#> %7 +=# ?1)> )?10#5 $=#>#4#. +=# ?1)>

    )?10# =1/ 1>@ 3=1>0#/5 +=# %4#.'1@ )?10#/ $)'' +=#> 7%''%$ +=# 3=1>0# 133%.()>0'@A

    S'/%5 1'' +=# %4#.'1@ )?10#/ 1.# )>(#-#>(#>+ %7 #13= %+=#. )> /&3= 1 $1@ +=1+ 1>@

    3=1>0# %7 %># %4#.'1@ )?10# $)'' >%+ 177#3+ +=# %+=#. %4#.'1@ )?10#A C=)/ -.%4)(#(

    &/#./ +=# 7'#,)B)')+@ 7%. 1(2&/+)>0 +=# (#+#3+#( -%/)+)%> 1>( /)`# %7 +=# %4#.'1@ )?10#A

    S+ +=# -.#/#>+ /+10#5 +=# (#+#3+)%> ?%(&'# =#'- +% 7)>( %&+ +=# -%/)+)%> %7 +=# 713)1'

    7#1+&.#/ A O@ &/)>0 +=# )?10# %4#.'1@ ?#+=%(5 1> %4#.'1@ )?10# 31> B# 1((#( +% +=#

    -=%+% 1+ +=# -%/)+)%> %7 +=# /-#3)7)3 713)1' 7#1+&.#/5 ?#1>$=)'#5 3=1>0)>0 +=# 3%'%. %7

    +=# %4#.'1@ )?10# 133%.()>0 +% +=# 3%'%. 3=%/#> )> +=# 3%'%. -1'#++#A C=)/ 31> 1''%$

    &/#. +% =14# 1 -.#4)#$ %7 =%$ /=# '%%*/ 17+#. 1--'@)>0 3#.+1)> 3%'%./ %>+% =#. 713# )> 1

    7#$ /#3%>(/5 .1+=#. +=1> /-#>()>0 GL ?)>&+#/ +% 1--'@ +=# .#1' ?1*#&- %>+% =#. 713#A

  • 8/10/2019 Ik0902 Report Final Reduced

    52/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone N=

    @"@

    >',C9&1 W/E,F/-&'&4

    R&.)>0 +=# )?-'#?#>+1+)%> -=1/#5 +=#.# $#.# /#4#.1' -.%B'#? #>3%&>+#.#(A

    GcC=# )6=%># 6.%3#//)>0 6%$#.

    C=# -.%3#//)>0 -%$#. )/ 1 3.)+)31' -.%B'#? #>3%&>+#.#( (&.)>0 +=# )?-'#?#>+1+)%>A

    C=# -.%3#//)>0 -%$#. %7 +=# /)?&'1+%.5 +=# )6=%># Q; M 1>( +=# )6=%># Q; =14# 1

    /)0>)7)31>+ ()77#.#>3#A

    H-#.1+)>0 )> ()77#.#>+ (#4)3#/5 +=# /-##( %7 +=# (#+#3+)%> -.%3#// 41.)#/A C=#.#7%.#5

    )+ )/ =1.( +% (#+#.?)># +=# (#+#3+)%> +=.#/=%'( +=1+ )/ /&)+1B'# 7%. B%+= )6=%># Q;

    1>( Q; MA K%.#%4#.5 )+ 1'/% =)>(#./ +=# (#4#'%-?#>+ -.%3#// 1/ )+ .#F&).#/ &/ +%

    B&)'( )> +=# .#1' (#4)3#/ 7%. 13+&1' -#.7%.?1>3#A

    JcN%& /""76/"M 1%6 (M( /$) +%7,> )(,(",8%$

    S/ +=# 133&.13@ 7%. #@# 1>( ?%&+= (#+#3+)%> )/ .#'1+)4#'@ '%$ 3%?-1.)>0 +% +=1+ %7

    713# (#+#3+)%>A C=# -%/)+)%> %B+1)>#( 17+#. #@# %. ?%&+= (#+#3+)%> ?1@ >%+ B#

    133&.1+#'@ /=%$> ( +% +=# (#+#3+)%> 71)'&.#A

    C% /%'4# +=)/ -.%B'#?5 $# /-#>+ +)?# %> +&>)>0 +=# +=.#/=%'( %7 +=# #@# 1>( ?%&+=

    (#+#3+)%>A E#+5 +=# .#/&'+ )/ >%+ /)0>)7)31>+A C=#.#7%.#5 $# (#3)(#( +% 1(( /%?#

    3%>+.%' -%)>+/ 7%. 7)># +&>)>0 +=# %4#.'1@ )?10# )> %.(#. +% /&)+ +=# ?1)> -=%+%A

  • 8/10/2019 Ik0902 Report Final Reduced

    53/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone N9

    Qc2%'%6 0'($)8$*

    D%. +=# +)?# B#)>05 +=# 3%'%. B'#>()>0 7%. +=# %4#.'1@ )?10# +% +=# +1.0#+ )?10# )/2&/+ 1 /)?-'# 3%'%. 7)'')>0 $)+= +.1>/-1.#>+ #77#3+A ")+= +=# -.#/#>+ 3%'%. 7)'')>0

    ?%(#5 )+ )/ >%+ .#1''@ ?#.0# )>+% +=# +1.0#+ )?10#A C=)/ ?1*#/ +=# %4#.'1@ )?10#

    ')*# 1 3%'%. ?1/* .1+=#. +=1> 3%/?#+)3A

    C% )?-.%4# +=# 3%'%. 1--')#(5 $# =14# +% 1--'@ /%?# 0.1-=)31' +#3=>)F +%

    #>=1>3# +=# #77#3+A D%. #,1?-'#5 B'&..)>0 %> #(0#/ %7 +=# )?10# $)'' )>(&3# 1

    0.1()#>+ #77#3+A

    Ic.%% )7)#. 0'1// +% .#/%'4# +=)/ -.%B'#?A "=#>#4#. +=# &/#. )/ 0%)>0

    +% 7)># +&># +=# %4#.'1@ )?10#5 1 ?10>)7)#. 0'1// $)'' -%- %&+ 1B%4# +=# /-#3)7)3

    3%>+.%' -%)>+/A C=)/ =#'- &/#./ +% /## +=# -%.+)%> %7 +=# /3.##> +=1+ )/ B#)>0 3%4#.

    B@ =)/ %$> 7)>0#. 1>( +=&/ 1''%$ #1/@ 1(2&/+?#>+ %7 +=# 3%>+.%' -%)>+/A

  • 8/10/2019 Ik0902 Report Final Reduced

    54/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone NL

    D4.( %7 +=# 713# (#+#3+)%> 7#1+&.# 1>(

    +=# -#.7%.?1>3# %> ()77#.#>+ (#4)3#/A C=.%&0= %&+ +=# +#/+)>05 $# 31> =14# B#++#.

    &>(#./+1>()>0 1B%&+ +=# -.%0.1? 1>( =%$ $#'' )+ -#.7%.?/5 +=&/ (#+#3+ /%7+$1.# 71)'&.#/

    /% +=1+ (#7#3+/ ?1@ B# &>3%4#.#( 1>( 3%..#3+#(A

    6=1/# G +#/+)>0 )/ ?1)>'@ 7%3&/)>0 %> +=# ')?)+1+)%> %7 +=# 713)1' 7#1+&.# (#+#3+)%>A "# =14#

    +#/+#( +=# ?1,)?&? .%+1+)%> 1>0'# %7 +=# 713#/5 B%+= =%.)`%>+1''@ 1>( 4#.+)31''@A C=#

    ?)>)?&? /)`# %7 713# 1>( +=# -=%+% )+ 31> (#+#3+A

    6=.1/# J +#/+)>0 )/ &/#( +% +#/+ +=# -#.7%.?1>3#5 133&.13@ 1>( 3%>/)/+#>3@ %7 %&. -.%2#3+A

    "# 31> (% .#7)>#?#>+ B1/#( %> =%$ $#'' )+ -#.7%.?/A

    6=1/# Q +#/+)>0 )/ &/#( +% +#/+ +=# 133&.13@ 1>( +=# -#.7%.?1>3# %7 +=# #@# (#+#3+)%> 1>(

    ?%&+= (#+#3+)%>A

    H"!:.-. :&2E'(B-(,/

    C% =14# 1 B#++#. 3%>+.%' %7 3%>/)/+#>3@5 $# (#3)(#( +% &/# 1 /)>0'# 713# -=%+% +=1+ +=#

    713# (#+#3+)%> +#/+ /&33##(5 +=#> (&-')31+# )+ +% 3.#1+# ?&'+)-'# 713#/ )> %># )?10#A "#

    31> +=#.#7%.# 3%>+.%' +=# >&?B#. %7 713#/ )> +=# +#/+)>0 )?10# #1/)'@ 1>( #>/&.# +=1+

    +=# 713# /=%&'( B# (#+#3+#( 1+ +=# /1?# +)?#A

  • 8/10/2019 Ik0902 Report Final Reduced

    55/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone NM

    H"*

    +&-D,4,9,6I

    6=1/# G

    C% +#/+ +=# ?1,)?&? =%.)`%>+1' .%+1+)%> 1>0'# %7 +=# 713# +=# -.%0.1? 31> (#+#3+5 $#

    =14# &/# 1 7.%>+ 713)>0 -=%+% +=#> .%+1+# +=# -=%+% =%.)`%>+1''@ B@ L (#0.##/ -#. +)?#

    +% -.%(&3# +=# +#/+)>0 -=%+%/ .#F&).#(A S7+#. +=1+5 +=# +#/+)>0 -=%+%/ 1.# )?-%.+#( +%

    +=# /)?&'1+%. 1>( )6=%># +% +#/+ +=# ?1,)?&? .%+1+)%> 1>0'#A

    C% +#/+ +=# ?1,)?&? 4#.+)31' .%+1+)%> 1>0'#5 +=# +#/+)>0 -=%+%/ 1.# 31-+&.#( 7.%? 1

    4)(#%A M)>3# $# 7%&>( ()77)3&'+@ +% -#.7%.? +=# 4#.+)31' .%+1+)%> %7 +=# -=%+% B@ &/)>0

    -=%+% #()+)>0 +%%' 1>( +=# #77#3+ )/ ()77#.#>+ B#+$##> .%+1+)>0 +=# -=%+% 1>( .%+1+)>0

    +=# 713#5 $# (#3)(#( +% +1*# 1 4)(#% %7 1 -#./%> .%+1+)>0 =)/ =#1( 1>( +=#> 31-+&.# +=#

    7.1?#/ +% B# +=# +#/+)>0 -=%+%/A C=# +#/+)>0 -=%+%/ 1.# )?-%.+#( +% +=# /)?&'1+%. 1>(

    (#4)3# +% +#/+ +=# ?1,)?&? .%+1+)%> 1>0'#A M)?)'1.'@5 +% +#/+ +=# /?1''#/+ /)`# %7 713#/

    31> B# &/#(i +=# -=%+% )/ 1(2&/+#( )>+% ()77#.#>+ /)`#/ 7%. +#/+)>0A

    6=1/#J

    e 6#.7%.?1>3#

    6.%0.1? =1/ B##> )?-%.+#( +% +=# )6=%># /)?&'1+%.5 )6=%># Q; M 1>( )6=%># Q; +%

    +#/+ +=# +)?# .#F&).#( 7%. #13= ?13=)>#A C=# '#// +)?# )+ >##(#(5 +=# B#++#.

    -#.7%.?1>3# )+ =1/A

    e S33&.13@

    V>(#. +=# 3%>/+.1)>+ %7 +=# -.%0.1? 7%&>( )> +=# -=1/# G +#/+)>05 -=%+%/ %7

    ?&'+)-'# 713#/ 1.# &/#( +% +#/+ +=# 133&.13@ %7 +=# -.%0.1? +% 3=#3* $=#+=#. +=#

    -.%0.1? 31> (#+#3+ 1'' +=# 713#/ +=1+ /=%&'( B# (#+#3+#(A

  • 8/10/2019 Ik0902 Report Final Reduced

    56/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone NN

    e /)/+#>3@

    ]13= /#+ %7 +#/+)>0 -=%+%/ 1.# +#/+#( 7%. 1+ '#1/+ Q +)?#/ +% /## )7 +=# .#/&'+/ 1.# +=#/1?#A C=# .&>+)?# 7%. #13= (#4)3#/ )/ 1'/% +#/+#( +% /## )7 +=# -.%3#//)>0 +)?#

    ()77#./A

    6=1/# Q

    e S33&.13@

    GL 7.%>+e713#( -=%+%/ %7 -#%-'# 7.%? ()77#.#>+ .13#/ 1.# &/#( 7%. +#/+)>0 +=#

    133&.13@ %7 #@# (#+#3+)%> 1>( ?%&+= (#+#3+)%> /#-1.1+#'@A C=# #@# (#+#3+)%>

    /&33##(/ )7 )+ 31> (#+#3+ +=# 3%..#3+ -%/)+)%>/ %7 +$% #@#/A C=# ?%&+= (#+#3+)%>

    /&33##(/ )7 )+ 31> (#+#3+ +=# 3%..#3+ -%/)+)%> %7 +=# ?%&+=A

    e 6#.7%.?1>3#

    S -=%+% )/ -1//#( +% +=# )6=%># /)?&'1+%.5 )6=%># Q; M 1>( )6=%># Q; +% +#/+ 7%.

    +=# -#.7%.?1>3#A C=# +)?# >##(#( 7%. #@# (#+#3+)%> 1>( ?%&+= (#+#3+)%> %> #13=

    (#4)3# )/ .#3%.(#( /#-1.1+#'@A C% 3%?-1.# +=# .#/&'+5 $# 1'/% .#3%.( +=# +)?#

    .#F&).#( 7%. (#+#3+)>0 +=# #@# 1>( +=# ?%&+= 1+ +=# /1?# +)?#A

  • 8/10/2019 Ik0902 Report Final Reduced

    57/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone NO

    H"7

    W%.9F.-(,/ ./4 X&2F9-2

    D4@43

    =>/( 1/"(

    D.%? +=# 1B%4# +#/+)>05 )+ /=%$/ +=1+ +=# ?1,)?&? .%+1+)%> 1>0'# +% +=# '#7+

    /)(# )/ 1B%&+ JL%A ^%+1+)>0 JN%%7 +=# 713# 31&/#/ 71)'&.# )> +=# +#/+)>0A

  • 8/10/2019 Ik0902 Report Final Reduced

    58/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone NP

    M)?)'1.'@5 $# -#.7%.? +=# /1?# +#/+)>0 +% +=# .)0=+ /)(#A

    C=# .#/&'+ 7%. +=# .)0=+ /)(# )/ /)?)'1. +% +=# %># %> +=# '#7+ /)(#i +=# ?1,)?&?

    .%+1+)%> 1>0'# +% +=# .)0=+ )/ 1B%&+ JI%A

  • 8/10/2019 Ik0902 Report Final Reduced

    59/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone NQ

    D4@4:

    =>/

  • 8/10/2019 Ik0902 Report Final Reduced

    60/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone N;

    ^)0=+ %+1+)%>

    D%. +=# '#7+ .%+1+)%>5 +=# ?1,)?&? .%+1+)%> 1>0'# )/ 1B%&+ NP %$=)'# +=# %># 7%.

    .)0=+ .%+1+)%> )/ LP %

    A M)>3# +=# +#/+)>0 -=%+%/ 1.# 31-+&.#( 7.%? 1 4)(#%5 +=#.#

    ?1@ B# )?-.#3)/)%> ( +% +=# )>3%>/)/+#>+ ?%4#?#>+ %7 +=# 713# )> +=# 4)(#%A

  • 8/10/2019 Ik0902 Report Final Reduced

    61/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone O:

    D4@4@

    =>/ $)'' /+)'' .#/)`# )+ +% 1

    B)00#. /)`# B#7%.# -#.7%.?)>0 +=# 713# (#+#3+)%> %> +=# -=%+%A C=#.#7%.#5 $#

    7%&>( +=1+ +=# -=%+% /)`# 177#3+/ %>'@ $=#> +=# 713# )> +=# .#/)`#( -=%+% )/ +%%

    B'&..#( /% +=1+ +=# 713# 31>d+ B# )(#>+)7)#( 17+#. .#/)`)>0 +=# -=%+% B@ +=#

    /@/+#?A 9> +=)/ +#/+)>05 +=# /?1''#/+ /)`# %7 -=%+% )/ 1B%&+ GL,JPA

  • 8/10/2019 Ik0902 Report Final Reduced

    62/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone O=

    D4@49

    S+/''(

  • 8/10/2019 Ik0902 Report Final Reduced

    63/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone O9

    D4@4D

    =>/

  • 8/10/2019 Ik0902 Report Final Reduced

    64/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone OL

    D.%? +=# 1B%4# 0.1-=5 )+ /=%$/ +=# +)?# .#F&).#( 7%. (#+#3+)>0 ()77#.#>+

    >&?B#. %7 713#/ 7%. ()77#.#>+ (#4)3#/A 0 $)+= )6=%># Q; M5 )6=%># Q;

    >##(/ J +)?#/ +=# +)?# .#F&).#( 7%. )6=%># Q;M +% (#+#3+ 713#/A C=# +)?#

    .#F&).#( )>3.#1/# /')0=+'@ $)+= +=# >&?B#. %7 713#/ (#+#3+#(A

  • 8/10/2019 Ik0902 Report Final Reduced

    65/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone OM

    6=%+% $)+= /)?-'# B13*0.%&>(

    6=%+% $)+= 3%?-')31+#( B13*0.%&>(

    C=# +)?# .#F&).#( 7%. 713# (#+#3+)%> 41.)#/ $)+= ()77#.#>+ B13*0.%&>(/A

    M)?-'# B13*0.%&>( >##(/ '#// +)?# 7%. +=# -.%0.1? +% '%31+# +=# 713# $=)'#

    +=# 3%?-'#, %># >##(/ ?%.# +)?#A

  • 8/10/2019 Ik0902 Report Final Reduced

    66/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone ON

    D4@4?

    =>/

  • 8/10/2019 Ik0902 Report Final Reduced

    67/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone OO

    D4@4H

    =>/

  • 8/10/2019 Ik0902 Report Final Reduced

    68/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone OP

    S/ /=%$> 7.%? 1B%4#5 +=# /@/+#? 31> (#+#3+ W -=%+%/ 3%..#3+'@ %&+ %7 GL

    -=%+%/A C=# 133&.13@ %7 +=# #@# (#+#3+)%> )/ +=#.#7%.# LQbA

    K%&+= R#+#3+)%>

  • 8/10/2019 Ik0902 Report Final Reduced

    69/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone OQ

    C=# /@/+#? 31> (#+#3+ +=# ?%&+= '%31+)%> 7%. 1'' GL -=%+%/ 3%..#3+'@A C=#

    133&.13@ )/ +=#.#7%.# GPPbA E#+5 +=# /@/+#? 1'/% (#+#3+ +=# '%31+)%> %7 #@# 1/

    +=# ?%&+= '%31+)%> 7%. GG -=%+%/ 1?%>0 GL -=%+%/A

  • 8/10/2019 Ik0902 Report Final Reduced

    70/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone O;

    D4@4C

    =>/

  • 8/10/2019 Ik0902 Report Final Reduced

    71/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone P:

    H"@

    =/.9I2(2 ./4 :(2EF22(,/

    9> -=1/# G +#/+)>05 $# 7%&>( +=# ?1,)?&? .%+1+)%> 1>0'# %7 +=# 713# +=# -.%0.1? 31>

    B# (#+#3+#(5 B%+= =%.)`%>+1''@ 1>( 4#.+)31''@A 97 +=# +)'+)>0 1>0'# #,3##(/ +=# ')?)+1+)%>5

    +=#.# )/ 1 =)0= -.%B1B)')+@ +=1+ +=# -.%0.1? 31>>%+ (#+#3+ +=# 713#A K%.#%4#.5 $# 1'/%

    +#/+ +=# /?1''#/+ -=%+% /)`# )+ 31> B# &/#(A M)>3# +=# -.%0.1? $)'' .#/)`# +=# -=%+% +% 1

    %-+)?1' /)`#5 +=# )?10# $)'' B# ()/+%.+#( )7 +=# )?10# /)`# )/ +%% /?1''A C=# -.%0.1? $)''

    +=#> )(#>+)7@ +=# '%31+)%> %7 +=# 713# )> +=# -=%+%A 97 +=# 713# )/ ()/+%.+#( +%% ?&3=5 +=#

    -.%0.1? 31>>%+ (#+#3+ )+A M)?)'1.'@5 )> 1 /+1>(1.( -=%+% $)+= +=# /)`# %7 QJP,IWP5 $#

    =14# +#/+#( +=# /?1''#/+ /)`# %7 +=# 713# +=1+ 31> B# (#+#3+#(A S'' +=# ')?)+1+)%> 7%&>(

    )> +=# +#/+)>0 )/ ')/+#( )> +=# +1B'# B#'%$A

    /+.1)>+

    K1,)?&? h%.)`%>+1' ^%+1+)%> S>0'# %7 D13# Y#7+[ JL%

    ^)0=+[ JI%

    K1,)?&? \#.+)31' ^%+1+)%> S>0'# %7 D13# Y#7+[ NP%

    ^)0=+[ LP%

    M?1''#/+ -=%+% /)`# GL , JP -),#'/

    M?1''#/+ 713# /)`# )> 1 /+1>(1.( -=%+% LP , LP -),#'/

  • 8/10/2019 Ik0902 Report Final Reduced

    72/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone P=

    6=1/# J +#/+)>0 )/ ?%.# 7%3&/ %> +=# -#.7%.?1>3# %7 %&. -.%0.1?A M)>3# +=# -.%3#//)>0

    -%$#. )/ ()77#.#>+ 7%. ()77#.#>+ (#4)3#/5 )+ .#F&).#/ '%>0#. +)?# 7%. '%$#. -.%3#//)>0-%$#. ?13=)>#A )6=%># Q;M -#.7%.?/ ?&3= 71/+#. +=1> Q;5 @#+5 )+ /+)'' +1*#/ GAL /#3%>(

    +% (#+#3+ 1 /)>0'# 713# -=%+%A M)>3# GAL /#3%>(/ /+)'' ?#1>/ 1 '%>0 -.%3#//)>0 +)?# )7 $#

    $%&'( ')*# +% (#4#'%- 1 .#1' +)?# 713# +.13*)>0 31?#.1AC=#.#7%.#5 .#7)>#?#>+ )/

    .#F&).#( 7%. 7&.+=#. (#4#'%-?#>+A

    O#/)(#/ +=# ()77#.#>3# )> -.%3#//)>0 -%$#. %7 +=# (#4)3#/5 +=#.# 1.# /%?# 713+%./

    177#3+)>0 +=# -#.7%.?1>3# %7 +=# 713# (#+#3+)>0 -.%3#//A C=#@ 1.# 1/ 7%''%$/[

    GcC=# >&?B#. %7 713#/ )> +=# )?10#A 9+ >##(/ '%>0#. +)?# 7%. (#+#3+)%> ?%.# 713#/A

    JcC=# B13*0.%&>( %7 +=# )?10# 177#3+/ +=# -#.7%.?1>3#A C=# ?%.# 3%?-')31+#( +=#

    B13*0.%&>( )/5 +=# '%>0#. +)?# )+ >##(/ 7%. (#+#3+)>0 +=# 713#/A

    D.%? +=# 133&.13@ +#/+5 $# +#/+#( )+ $)+= 1> )?10# %7 LP 713#/5 )+ /+)'' $%.*/ $#''

    $)+=%&+ 1>@ 71)'&.#A 9> >%.?1' /)+&1+)%>5 +=#.# $)'' >%+ B# ?%.# +=1> LP 713#/ )> 1 />1-

    /=%+A C=#.#7%.#5 $# 31> 1//&?# +=# -.%0.1? 31> 7&>3+)%> -.%-#.'@ 7%. %&. 7&.+=#.

    (#4#'%-?#>+A

  • 8/10/2019 Ik0902 Report Final Reduced

    73/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone P9

    6=1/# Q +#/+)>0 )/ &/#( +% +#/+ %> +=# 133&.13@ 1>( +=# -#.7%.?1>3# %7 +=# #@#

    (#+#3+)%> 1>( ?%&+= (#+#3+)%>A O#7%.# +=# +#/+)>05 $# #,-#3+ +=# .1+# %7 133&.13@ $)''B# /)?)'1. +% 713# (#+#3+)%>5 $=)3= )/ =)0=A h%$#4#.5 +=# 133&.13@ +#/+ 7%. #@# (#+#3+)%>

    )/ %>'@ LQb5 $=)3= )/ ?&3= '%$#. +=1> +=1+ %7 713# (#+#3+)%>A S'+=%&0= +=# /@/+#? 31>

    7)>( 1'' +=# ?%&+= '%31+)%>/5 $# 7%&>( +=1+ +=# /@/+#? $)'' +.#1+ +=# #@# '%31+)%> 1/ +=#

    ?%&+= '%31+)%> 7%. %4#. UQb %7 -=%+%/A C=#.#7%.#5 )7 $# %>'@ 3%&>+ +=%/# +=1+ 31>

    (#+#3+ %>'@ ?%&+= '%31+)%> 3%..#3+'@5 +=# 133&.13@ $)'' B# 2&/+ 1B%&+ JUb5 $=)3= )/ 4#.@

    '%$A M)>3# +=# 133&.13@ 7%. B%+= #@# 1>( ?%&+= )/ >%+ 1/ 0%%( 1/ #,-#3+#(5 )+ %B4)%&/'@

    >##(/ 1(2&/+?#>+ %7 +=# +=.#/=%'(A

    C=# -#.7%.?1>3# +#/+ /=%$/ +=# +)?# >##(#( 7%. ()77#.#>+ (#4)3#/ +% -#.7%.? +=# #@#

    (#+#3+)%> 1>( ?%&+= (#+#3+)%>A "# 7%&>( +=1+ +=# -.%3#//#( +)?# )/ 133#-+1B'# 7%.

    )6=%># Q; M5 B&+ +=# +)?# (%&B'#( 7%. )6=%># Q;5 $=)3= )/ 1B%&+ NeU /#3%>(/A C=# +)?#

    >##(#( +% -#.7%.? B%+= #@#e(#+#3+)%> 1>( ?%&+= (#+#3+)%> +%0#+=#. )/ B1/)31''@ +=#

    /&? %7 +=# +)?# .#F&).#( 7%. (#+#3+)>0 #@# 1>( ?%&+= /#-1.1+#'@A C=#.#7%.#5 +=#.# )/

    >% 1(41>+10# +% -#.7%.? +=# #@# 1>( ?%&+= (#+#3+)%> +%0#+=#. )> +=# 1--')31+)%>5

    #/-#3)1''@ $=#> +=# )6=%># Q;M >##(/ GQ /#3%>(/ $=)3= )/ +%+1''@ )>+%'#.1B'#A

  • 8/10/2019 Ik0902 Report Final Reduced

    74/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone PL

    H"H

    Y,C :(%(2(,/

    D4D43

    ;8

  • 8/10/2019 Ik0902 Report Final Reduced

    75/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone PM

    D4D4:

    =(61' E#1. 6.%2#3+ =1/ 1'$1@/ B##> 1 0.#1+ 3=1''#>0# +% ?#A M)>3# 9 1? >%+ 1 71/+

    '#1.>#. )> -.%0.1??)>05 )+ )/ =1.( 7%. ?# +% '#1.> 1 >#$ -.%0.1??)>0 '1>0&10#

    1'' B@ ?@/#'7 )> 1 4#.@ /=%.+ +)?#A Y&3*)'@5 +=#.# 1.# (#4#'%-#. 7%.&?/ )> +=#

    )>+#.>#+ +=1+ +=# (#4#'%-#./ 7.%? 1'' %4#. +=# $%.'( /=1.#( 1 '%+ %7 &/#7&'

    +&+%.)1'/5 )(#1/ 1>( -.#3)%&/ #,-#.)#>3# )> (#4#'%-)>0 )6=%># 1--')31+)%>/A

    K%.#%4#.5 2%)>)>0 +=# ""R< '1/+ /&??#. )/ 1> 1$#/%?# #,-#.)#>3#A \)1 +=#

    +1'*/ 1>( '1B /#//)%>/5 9 0%+ 1 '%+ %7 )>/-).1+)%>/ 7.%? +=# +1'#>+#( (#4#'%-#./A

    K@ -1.+>#.5 _%/#-=5 =1/ 1'$1@/ B##> /&--%.+)4# 1>( =# #,-'1)>#( 1 '%+ $=#> 9

    =14# (%&B+/ )> 3%()>0A "=)'# _%/#-= $1/ ?%.# 3%>3#>+.1+#( +% $%.* %> +=#

    (#+#3+)%> ?%(&'#/ $=)3= )/ +=# ?12%. -1.+ %7 %&. 1--')31+)%>5 9 $1/ .#/-%>/)B'#

    +% (#/)0>5 )?-'#?#>+ +=# /)(# -1.+/ ')*# +=# )>+#.713#5 #?1)' /@/+#? 1>( )?10#

    %4#.'1@A 9 #>2%@#( $%.*)>0 $)+= _%/#-= 1/ $# 31> /=1.# +=# $%.* #4#>'@ 1>(

    =#'- #13= %+=#. $=#>#4#. >##(#(A

    S/ ?#>+)%>#( 1B%4#5 9 $1/ .#/-%>/)B'# 7%. (#/)0>)>0 +=# )>+#.713#A S+ +=#

    B#0)>>)>05 9 ()(>d+ .#1')`# =%$ )?-%.+1>+ +=# &/#. )>+#.713# ?#1>/ +% 1>

    1--')31+)%> &>+)' %&. -.%7#//%. 3%>/)/+#>+'@ #?-=1/)`#( +=# )?-%.+1>3# %7 1

    &/#. )>+#.713#A _&/+ '%%* 1+ S--'#d/ -.%(&3+/5 0%%( )>+#.713# '#( S--'# +% 1

    3%>/)/+#>+ /&33#//A V/#. )>+#.713# )/ $=1+ +=# &/#. ().#3+ )>+#.13+/ $)+=5 )+

    /+.1)0=+'@ 177#3+/ =%$ +=# &/#. 7##'/ 1B%&+ @%&. 1--')31+)%>A 9 +.)#( =1.( +%

    3.#1+# 1 /)?-'# &/#. )>+#.713# +=1+ )/ #1/@ +% &/# 1>( 31&/# 1/ '#// 3%>7&/)%> 1/

    )+ 31>A 9 3=%/# +% B&)'( +=# )>+#.713# B@ &/)>0 +=# 9>+#.713# O&)'(#. 1/ )+ =1( 1''

    +=# /+1>(1.( #'#?#>+/ %7 1> )>+#.713# ')*# +=# +%%'B1.5 .%&>( B&++%>5 )?10#

    4)#$AAA#+3A 9+ )/ #1/@ +% /+1.+ $)+= 1>( )+ 0)4#/ +=# &/#. +=# /+1>(1.( '1@%&+ $=)3=

    )/ #1/@ +% &/#A E#+5 1/ 1'' +=# +=)>0/ )> +=# 9>+#.713# O&)'(#. )/ /+1>(1.(5 )+ (%#/>d+

    1''%$ ?&3= 41.)1+)%>A C=#.#7%.#5 )+ $%&'( B# B#++#. 7%. 01?# (#4#'%-#./ +%

    3.#1+# +=# &/#. )>+#.713# B@ V98)+5 q&1.+` 1>( H-#>;Y ]M 1/ )+ 1''%$/ 1 ?%.#)>+#.#/+)>0 )>+#.713#A 9 1'/% =#'-#( +% ?1*# +=# )?10# %4#.'1@ 1>( #?1)' 7#1+&.#

  • 8/10/2019 Ik0902 Report Final Reduced

    76/85

    !"#$%&'"(& *+ ,*'#-&"% ./0"(/" $(1 2(30(""%0(3

    40($5 6"$% 7%*8"/& 9::; < 9:=: 9(1>"%' ?"#*%&

    .-#"%@0A"1 BC 7%*+D EFGH E-* ,I0(J F%K0(

    CUHK, CSE | IK0902 Gaming on iPhone PN

    %7 +=# /@/+#?A 9+ )/ 1 7&> -.13+)3# +=1+ 9 =1( +% '#1.> 1'' +=# 3%(#/ 7.%? +=#

    +&+%.)1'/ %>')># 1>( 0% +=.%&0= 1 '%+ %7 f+.@ 1>( #..%.g -.%3#// B#7%.# /&33##(A 97#'+ /% /1+)/7)#( $=#> 9 0%+ )+ (%>#A

    9 1'/% +%%* -1.+ )> (%)>0 +=# +#/+)>0/ 1>( 1>1'@/)/A "# /#-1.1+#( +=# +#/+)>0 )>+%

    7%&. -=1/#/A 6=1/# G +#/+)>0 )/ ?1)>'@ 7%3&/ %> +=# ')?)+1+)%> %7 +=# 713#

    (#+#3+)%> 7#1+&.# 1>( 6=1/# J +#/+)>0 )/ &/#( +% +#/+ +=# -#.7%.?1>3# 133&.13@

    1>( 3%>/)/+#>3@ %7 M:S6TA 6=1/# Q +#/+)>0 )/ &/#( +% +#/+ 1B%&+ +=# 133&.13@ 1>(

    -#.7%.?1>3# %7 #@# 1>( ?%&+= (#+#3+)%>A C=# +#/+)>0 -.%3#// )/ 4#.@ )?-%.+1>+

    +% +=# 1--')31+)%> (#4#'%-?#>+ 1/ )+ -.%4)(#/ /%')( (1+1 7%. 1>1'@`)>0 +=#

    1--')31+)%> 1>( .#4#1'/ +=# 1.#1/ +=1+ >##( )?-.%4#?#>+ 1>( .#7)>#?#>+A

    0 +% +=# 7)./+ /#?#/+#.5 $# ?1@ >%+ B# 1B'# +% )?-'#?#>+ +=# $=%'#

    +=)>0 )> 1 4#.@ /=%.+ -#.)%( %7 +)?#A C=)/ )/ B#31&/# $# /-#>+ F&)+# 1 '%+ %7 +)?#

    +% .#B&)'( +=# $=%'# /@/+#? 1>( /%'4# +=# '%$ 133&.13@ %7 #@# 1>(