|iPhone 4S||iPhone 4|
|Capacity||16GB 32GB 64GB||8GB|
|Processor||Dual-core A5 chip||A4 chip|
|Display chip||Retina display 960 by 640 pixels at 326ppi||Retina display 960 by 640 pixels at 326ppi|
|Cameras||8 megapixel camera||5 megapixel camera|
|Video recording||iSight camera FaceTime camera*
1080p HD video recording
|FaceTime video calling*
720p HD video recording
|Wireless||Wi-Fi and Bluetooth||Wi-Fi and Bluetooth|
|Talk time||Up to 8 hours on 3G||Up to 7 hours on 3G|
1. 1GB = 1 billion bytes; actual formatted capacity less.
2. Battery life varies by use and configuration. See apple.com/batteries for more information.
*Video calling only available through the FaceTime application. FaceTime requires an iPhone 4 and above plus a Wi-Fi connection for both caller and recipient.