Samsung Galaxy S II 

Released April, 2011
  • Android 4.1.2
  • 4G
  • 4.3"
  • Dual core 1.2 GHz
Taking into account its higher $229.99 price point and not as buttery smooth performance, Sprint’s Samsung Epic 4G Touch is looking a teeny bit better.
by PhoneArena (Oct, 2011)
With 131 x 70 x 9 mm, and 135 grams of weight, the droid still qualifies as being quite pocket friendly.
by GSM Arena (Oct, 2011)
6.3 Out of 10

PhoneRocket Review Our evaluation of the Samsung Galaxy S II


Processing power and speed

Galaxy S II
Geekbench and Sunspider 0.9.1


3D and 2D graphics

Galaxy S II
AnTuTu 3D, GLBenchmark 2.5 and GLBenchmark 2.7

Battery Life

How long will the battery last

Galaxy S II
Talk time (3G), Talk time, Standby time (3G), Standby time and 1 more


How do our trusted review sites rank these products?

Galaxy S II
Reviews from,,, and


PhoneRocket Score

Performance, Graphics, Battery Life and Reviews

Galaxy S II

Benchmarks Real world tests of the Samsung Galaxy S II

geekbench Processor and memory performance

Galaxy S II
Moto G

SunSpider 0.9.1 Web browser and javascript performance

Galaxy S II
1,754 ms
Galaxy S III
1,192 ms
Lumia 520
1,444 ms

DxOMark photo quality How good is the phone's camera?

Galaxy S II

DxOMark video quality Does it shoot good quality video?

Galaxy S II

Reviews Word on the street for the Samsung Galaxy S II

More than equipped to play our test video that’s encoded in DivX 1920 x 1080 resolution, the handset is unequivocally perfect for the occasion thanks to its smooth playback and rich details – and it helps that its Super AMOLED Plus display is so oozing with plenty of eye-catching visuals.

What People Are Saying Give it to me straight


Contrast and viewing angles are still as good as they come on a mobile display, thanks to the AMOLED technology.
by PhoneArena (May, 2011)
Combining its great viewing angles and decent brightness out, we’re mesmerized by its polarizing display.
by PhoneArena (Sep, 2011)
Above all, its 4.52” WVGA Super AMOLED Plus display continues to impress us with its wide viewing angles, high-contrast looks, and vibrant color production.
by PhoneArena (Oct, 2011)


The Samsung Galaxy S II for AT&T had great in-call quality and the sound was crisp and loud.
by GSM Arena (Oct, 2011)
Handling the Galaxy S II for AT&T is a pleasure.
by GSM Arena (Oct, 2011)
While the interface of the Android web browser has hardly changed, the hardware specs of the Samsung Galaxy S II for AT&T propel it to great heights of user experience.
by GSM Arena (Oct, 2011)


Equally impressive, the handset’s 1080p video capture is seemingly on a level on its own as we’re treated with plenty of delicious visuals with its quality.
by PhoneArena (Sep, 2011)
MKV container, in which a lot of the 1080p videos are wrapped, is no problemo as well - the Samsung Galaxy S II eats 1080p.
by PhoneArena (May, 2011)
Exuding a feverish rate with its performance already in other categories, not even a high quality movie trailer encoded in DivX, H264, MPEG-4, and Xvid 1920x1080 resolution can stop it from playing it smoothly without hesitance.
by PhoneArena (Sep, 2011)


Truly showcasing why it’s probably the fastest Android smartphone around, its 1.2GHz dual-core Samsung Exynos processor just blazes through the competition with its flawless execution.
by PhoneArena (Sep, 2011)
With two Scorpion cores, clocked at 1.5GHz, the Snapdragon surely is no slouch.
by GSM Arena (Oct, 2011)
Interestingly enough, we are still to encounter a faster Android smartphone, made by a company other than Samsung, despite the significant number high-end dual-core offerings released by the competition since then.
by GSM Arena (Oct, 2011)


The large Super AMOLED Plus screen is stunning.
by GSM Arena (Oct, 2011)
Conclusion: If you held off from buying the Samsung Infuse 4G to experience Super AMOLED Plus goodness, you’ll be smiling from ear to ear knowing that the AT&T Samsung Galaxy S II is by far the best thing to come around from Sammy’s camp on the airwaves of the carrier.
by PhoneArena (Sep, 2011)
Samsung is moving to a laser-based production method for its AMOLED displays this year, which will allow for 300ppi + pixel densities, so we are looking forward to such higher resolutions.
by PhoneArena (Apr, 2011)

Specifications Full list of technical specs


Size 4.3"
Resolution 800 x 480
Touchscreen Capacitive
Multitouch Yes
PPI 216 ppi


Has an assisted GPS Yes


Supports FM radio Yes


Operating system Android 4.1.2
Multitasking Yes
App store Android Market
Adobe flash support No
App store size 850,000 apps


Acts as a wi-fi hotspot Yes
Supports NFC No
Bluetooth Bluetooth v3.0

form factor

Weight 116 g
Thickness 8.5 mm
Size 66.1 x 125.3 x 8.5 mm


Clock speed 1.2 GHz
Number of cores Dual core
Internal storage 32 GB
Supported card formats
  1. SDHC
  2. SD

photo & video

Camera 8 MP
Resolution 8 MP
Flash Yes
Secondary camera 2 MP
Video resolution 1920 x 1080 @ 30 fps


Generation 4G
  1. HSUPA (5.76 Mb/s)
  2. HSPA (unspecified)
  3. UMTS (0.38 Mb/s)
  4. EDGE (0.38 Mb/s)
  5. Unknown (21.1 Mb/s)
  6. HSDPA+ (21.1 Mb/s)
  7. GSM (0.01 Mb/s)


Talk time 1,098 min
Talk time (3G) 540 min
Standby time 42,624 min
Standby time (3G) 37,152 min
Capacity 1,650 mA·h
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