This document provides a high level analysis of device performance metrics pulled from the Crittercism big data platform for August 2013: - Top 100 Samsung Android devices (based on app loads) - Installed base of ~250M (Android) devices - Total of 10B+ app loads

1. Samsung Device Performance Analysis!
San Francisco, October 2013!

2. Agenda!
Background ß!
Data Analysis!
Next Steps!

3. Background!
This document provides a high level analysis of device
performance metrics pulled from the Crittercism big data
platform for August 2013:!
• Top 100 Samsung Android devices (based on app loads) !
• Installed base of ~250M (Android) devices!
• Total of 10B+ app loads!

4. Key take-aways!
Crashes & performance issues affect all devices regardless of app loads,
however Samsung tablets (Galaxy Tab) and “phablets” (Galaxy Note) have the
highest crash rates, 3-4x the crash rate of the best phones.!
Some Samsung devices sold by non-US carriers are experiencing much higher
crash rates than their US counterparts, such as the Galaxy S III in both Japan
and Korea.!
Other “bad offenders” are older models still in use like the Galaxy Y and Galaxy
Ace that were shipped with Android versions as old as Froyo and Gingerbread
(both originally released back in 2010).!
More than 50% of Samsung devices have an average crash rate of greater
than 0.25%; in addition, 10 of the top 100 devices account over 60% of total
usage, suggesting a Pareto distribution of performance issues. !

5. Agenda!
Background!
Data Analysis ß!
Next Steps!

6. 2.00%
1.50%
0.00%
sc-06
gt-n8000
gt-p7500
gt-p6200
gt-p6800
gt-p7510
gt-s5360
gt-p1000
gt-p3100
gt-s5570
gt-s6102
gt-p3110
gt-s5660
shw-m250
shv-e250
gt-p5100
sc-04
gt-s5830
gt-p3113
gt-s5839
sch-r820
shv-e120
sc-02
sgh-i997
sgh-t889
shv-e210
sgh-t959
sch-r530
sch-s720
gt-s5302
gt-p5110
gt-n7100
sc-03
sch-s738
gt-s5300
sph-m930
sgh-t999
shv-e160
sch-i500
sch-i605
gt-s7562
sph-l900
sph-d700
gt-s6802
gt-i9305
gt-s5301
gt-p5113
gt-i9003
gt-n7105
gt-i9000
sgh-i747
shv-e300
sgh-i317
sph-l710
gt-i9105
gt-n7000
gt-i9082
sch-i535
gt-i8160
sch-r760
gt-s7560
gt-s7500
gt-s6500
gt-i9500
gt-i9070
sgh-i777
gt-b5330
shw-m440
gt-i8150
gt-i9100
sph-d710
gt-s6810
sgh-m919
gt-i9195
gt-i9001
sph-l300
sch-r830
sgh-t769
sgh-t679
sph-m830
gt-i8190
sph-l720
sch-i545
sgh-i727
sgh-i537
sch-i510
sch-i200
sgh-i547
gt-i9505
sch-r970
sch-i405
sch-i415
sgh-t989
sgh-t699
sph-m950
gt-i8730
sgh-i337
gt-i9300
sgh-i717
sgh-i437
3 orders of magnitude range for crash rates!
Crash Rates for Top 100 Samsung Devices (by App Loads)!
5.00%
4.50%
4.00%
3.50%
3.00%
Lowest!
Highest!
Mean!
2.50%
0.05%!
4.74%!
0.38%!
Median! Std. Dev.!
0.28%!
0.58%!
3 orders of
magnitude!
1.00%
0.50%

7. Performance issues affect all devices!
Performance Correlation for Top 100 Devices !
Performance for Top 30 Devices (by App Loads)!
Device! App Loads (Millions)!
gt-i9300
gt-i9505
sgh-t989
gt-n7000
sph-l720
gt-i9500
sch-i545
sph-l710
sgh-t999
gt-i9070
gt-i9001
gt-i9082
sgh-i717
gt-p5100
sgh-i727
521
426
371
367
288
254
201
184
180
179
174
165
161
148
142
138
130
119
114
98
92
86
83
81
79
77
66
63
910
Million App Loads (x) vs. Crash Rate (y)!
Crash Rate (%)!
2,953
0.07%
0.17%
0.10%
0.11%
0.08%
0.14%
0.26%
0.07%
0.11%
0.16%
0.21%
0.35%
0.11%
0.25%
0.27%
0.32%
0.28%
0.20%
0.14%
0.06%
0.11%
Crashes are independent from
app loads, affect all devices!
5.00%
4.00%
3.00%
2.00%
0.52%
0.66%
1.00%
0.28%
0.26%
0.35%
0.24%
0.23%
0.00%
0.59%
-
1,000
R² = 0.01284
2,000
3,000
0.73%
-1.00%
Crash rates do not correlate
with app loads (R2 =0.01) !
4,000

8. Distribution for app loads / crash rates!

9. Probability distribution (fitted)!
Probability Distribution (30 day sample for top 100 devices, 10B+ app loads)!
• More than 50% of Samsung
devices have an average crash
rate of greater than 0.25%!
Lowest
Highest
Mean
0.05%
4.74%
0.38%
Median Std. Dev.
0.28%
0.58%
0.00% 0.50% 1.00% 1.50% 2.00% 2.50% 3.00% 3.50% 4.00% 4.50% 5.00% 5.50%
• 10 of the top 100 devices
account over 60% of total usage,
suggesting a Pareto distribution !

10. Agenda!
Background!
Data Analysis!
Next Steps ß!