O2 | iPhone | Compare iPhone 4 with iPhone 3GS

iPhone 4S

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Display	High-resolution Retina display 960-by-640 resolution 326 ppi	480-by-320 resolution 163 ppi
Video calling	Facetime (iPhone 4 to iPhone 4 over Wi-Fi)	- - - -
Camera	5 megapixels LED flash Autofocus Tap to focus Front camera with VGA resolution	3 megapixels Autofocus Tap to focus - - - -
Video recording	HD video recording Tap to focus while recording LED light	VGA video recording
Other features	Apple A4 processor Gyro Multitasking¹ Folders iBooks	- - - - - - - - Multitasking¹ Folders iBooks
Color
Battery life²	Talk time: Up to 7 hours on 3G; Up to 14 hours on 2G Standby time: Up to 300 hours Internet use: Up to 6 hours on 3G; Up to 10 hours on Wi-Fi Audio playback: Up to 40 hours Video playback: Up to 10 hours	Talk time: Up to 5 hours on 3G; Up to 12 hours on 2G Standby time: Up to 300 hours Internet use: Up to 5 hours on 3G; Up to 9 hours on Wi-Fi Audio playback: Up to 30 hours Video playback: Up to 10 hours

¹Multitasking is not available with all apps. ²Rechargeable batteries have a limited number of charge cycles and may eventually need to be replaced. Battery life and number of charge cycles vary by use and settings. See www.apple.com/batteries for more information. TM and © 2010 Apple Inc. All rights reserved.