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You can compare comprehensive specifications including screen size and type, processor and performance, RAM and storage, camera quality and megapixels, battery capacity and charging, operating system, weight and dimensions, build materials, display resolution, refresh rate, sensors, connectivity features (5G, WiFi, Bluetooth), and many other technical details.

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DevicesArena

Name: Samsung Galaxy S II
Brand: Samsung

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Samsung Galaxy S II

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Samsung Galaxy S I

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View Specs:

NETWORK
Technology GSM / HSPA	Technology GSM / HSPA	N/A
2G bands GSM 850 / 900 / 1800 / 1900	2G bands GSM 850 / 900 / 1800 / 1900	N/A
3G bands HSDPA 850 / 900 / 1900 / 2100	3G bands HSDPA 900 / 1900 / 2100	N/A
Speed HSPA 21.1/5.76 Mbps	Speed HSPA 7.2/5.76 Mbps	N/A
LAUNCH
Announced 2011, February. Released 2011, April	Announced 2010, March. Released 2010, June	N/A
Availability Discontinued	Availability Discontinued	N/A
BODY
Dimensions 125.3 x 66.1 x 8.5 mm (4.93 x 2.60 x 0.33 in)	Dimensions 122.4 x 64.2 x 9.9 mm (4.82 x 2.53 x 0.39 in)	N/A
Weight 116 g (4.09 oz)	Weight 119 g (4.20 oz)	N/A
Materials Glass front (Gorilla Glass), plastic back, plastic frame	Connectivity Slot Mini-SIM	N/A
Connectivity Slot Mini-SIM	N/A	N/A
DISPLAY
Type Super AMOLED Plus	Type Super AMOLED	N/A
Size 4.3 inches, 52.6 cm2 (~63.5% screen-to-body ratio)	Size 4.0 inches, 45.5 cm2 (~58.0% screen-to-body ratio)	N/A
Resolution 480 x 800 pixels, 5:3 ratio (~217 ppi density)	Resolution 480 x 800 pixels, 5:3 ratio (~233 ppi density)	N/A
Protection Corning Gorilla Glass	Protection Corning Gorilla Glass	N/A
HARDWARE
OS Android 2.3.4 (Gingerbread), upgradable to 4.1 (Jelly Bean), TouchWiz UI 4	OS Android 2.1 (Eclair), upgradable to 2.3 (Gingerbread), TouchWiz UI 3	N/A
System Chip Exynos 4210 Dual	System Chip Hummingbird	N/A
Processor Dual-core 1.2 GHz Cortex-A9	Processor 1.0 GHz Cortex-A8	N/A
GPU Mali-400MP4	GPU PowerVR SGX540	N/A
MEMORY
1GB RAMGB RAM, 16GB/32GBGB, Expansion Slot: Yes	512MB RAMGB RAM, 8GB/16GB storageGB, Expansion Slot: Yes	N/A
MAIN CAMERA
Dual 8 MP, f/2.6, 1/3.2", AF	Dual 5 MP, AF	N/A
Features LED flash	Video Recording 720p@30fps	N/A
Video Recording 1080p@30fps	N/A	N/A
SELFIE CAMERA
Single 2 MP	Single VGA	N/A
Video Recording	N/A	N/A
MULTIMEDIA
Audio Output Yes	Audio Output Yes	N/A
3.5mm jack Yes	3.5mm jack Yes	N/A
CONNECTIVITY
WLAN Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, hotspot	WLAN Wi-Fi 802.11 b/g/n, DLNA, hotspot (Android 2.2)	N/A
Bluetooth 3.0, A2DP, aptX	Bluetooth 3.0, A2DP, aptX	N/A
Location GPS, A-GPS	Location GPS, A-GPS	N/A
Proximity Optional	Radio FM radio, RDS	N/A
Radio Stereo FM radio, RDS	USB microUSB 2.0	N/A
USB microUSB 2.0 (MHL TV-out), OTG	N/A	N/A
FEATURES
Sensors Accelerometer, gyro, proximity, compass	Sensors Accelerometer, proximity, compass	N/A
Browser HTML, Adobe Flash	Browser WAP 2.0/xHTML, HTML, Adobe Flash ISDB-Tb Digital TV tuner (only available for Brazilian market)	N/A
BATTERY
Type Removable Li-Ion 1650 mAh battery	Type Removable Li-Ion 1500 mAh battery	N/A
Charging	Charging 10W - 12W	N/A
GENERAL INFO
Colors Black, White, Pink	Colors Black, White	N/A
Versions GT-I9100 (Exynos), GT-I9100G (TI OMAP)	Versions GT-I9000 (Standard), GT-I9000B (South America), GT-I9000M (Canada), GT-I9000T (Australia)	N/A
Price About 170 EUR / €144.17	Price About 120 EUR / €101.77	N/A