The iPhone 4S brings a reworked iOS 5 and introduces Siri, a personal voice assistant allowing you to vocally communicate with the iPhone. It comes with a 3.5" screen with a resolution of 640 x 960, but on the inside there's a twice more powerful dual-core A5 processor. The rear 8MP camera resides and it's capable of recording 1080p videos.

CDMA available only if sold and activated for use on a CDMA network. GENERAL    2G Network    GSM 850 / 900 / 1800 / 1900      CDMA 800 / 1900 3G Network    HSDPA 850 / 900 / 1900 / 2100      CDMA2000 1xEV-DO Announced    2011, October Status    Available. Released 2011, October SIZE    Dimensions    115.2 x 58.6 x 9.3 mm Weight    140 g DISPLAY    Type    LED-backlit IPS TFT, capacitive touchscreen, 16M colors Size    640 x 960 pixels, 3.5 inches (~330 ppi pixel density) Multitouch    Yes Protection    Scratch-resistant glass, oleophobic coating SOUND    Alert types    Vibration, MP3 ringtones Loudspeaker    Yes 3.5mm jack    Yes MEMORY    Card slot    No Internal    16/32/64 GB storage, 512 MB RAM DATA    GPRS    Yes EDGE    Yes Speed    HSDPA, 14.4 Mbps; HSUPA, 5.8 Mbps WLAN    Wi-Fi 802.11 b/g/n, Wi-Fi hotspot Bluetooth    Yes, v4.0 with A2DP USB    Yes, v2.0 CAMERA    Primary    8 MP, 3264x2448 pixels, autofocus, LED flash, check quality Features    Touch focus, geo-tagging, face detection, HDR Video    Yes, 1080p@30fps, LED video light, video stabilization, geo-tagging, check quality Secondary    Yes, VGA FEATURES    OS    iOS 5 Chipset    Apple A5 CPU    Dual-core 1 GHz Cortex-A9 GPU    PowerVR SGX543MP2 Sensors    Accelerometer, gyro, proximity, compass Messaging    iMessage, SMS (threaded view), MMS, Email, Push Email Browser    HTML (Safari) Radio    No GPS    Yes, with A-GPS support and GLONASS Java    No Colors    Black, White      - MicroSIM card support only - Scratch-resistant glass back panel - Active noise cancellation with dedicated mic - Siri natural language commands and dictation - iCloud cloud service - Twitter integration - Google Maps - Audio/video player and editor - Image editor - Voice command/dial - TV-out BATTERY         Standard battery, Li-Po 1432 mAh Stand-by    Up to 200 h (2G) / Up to 200 h (3G) Talk time    Up to 14 h (2G) / Up to 8 h (3G) Music play    Up to 40 h

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