Samsung galaxy SII specs and weaknesses

• 2G Network: GSM 850 /900/ 1800/1900
• 3G Network: HSDPA 850/900/1900/2100
• Mini Sim: available
• Announced in February 2011.
• Dimensions: 125.3 x 66.1 x 8.5 mm (4.93 x 2.60 x 0.33).
• Weight: 116 g (4.09 oz).
• Screen Type: Super AMOLED Plus capacitive touchscreen, 16M colors.
• Screen Size: 480 x 800 pixels , 4.3 inches ( ~ 217 ppi pixel density ).
• multitouch: available.
• Screen Protection: Corning Gorilla Glass.
• TouchWiz UI v4.0.
• Sound Alert types: Vibration ; MP3, WAV ringtones.
• Speakerphone: available.
• 3.5mm jack: available.
• Memory Card slot: microSD , up to 32GB.
• Internal storage: 16/32 GB storage, 1 GB RAM.
• Data GPRS: Class 12 (4 +1 / 3 +2 / 2 +3 / 1 +4 slots), 32 - 48 kbps.
• EDGE: available.
• WLAN: Wi - Fi 802.11 a / b / g / n , dual-band , DLNA, Wi - Fi Direct, Wi - Fi hotspot.
• Bluetooth: available, v3.0 + HS.
• NFC: Optional.
• USB: available, v2.0 microUSB ( MHL ), USB On - the -go
• Primary camera: 8 MP , 3264 x 2448 pixels, autofocus, LED flash, Geo - tagging, touch focus, face and detection, image stabilization, smile Properties.
• Video: Yes , 1080p @ 30fps.
• Secondary camera: Yes, 2 MP.
• OS: Android OS, v2.3.4 (Gingerbread) , v4.0.4 (Ice Cream Sandwich) , can be upgraded to v4.1 ( Jelly Bean ).
• chipset: Exynos 4210.
• CPU: Dual -core 1.2 GHz Cortex - A9
• GPU: Mali - 400.
• Sensors: Accelerometer , gyro, proximity , compass
• Battery: Li - Ion 1650 mAh battery.
• Stand-by: 610 hours to 710 hours. 
• Normal usage:18 hours and 20 minutes of talk time (2G) / Up to 8 h 40 min (3G ).