iPhone 4S Battery Life: How Does It Compare to Other Smartphones? 

The Samsung Epic Touch 4G (Sprint’s Galaxy S II phone) had the longest battery life span at 7 hours, 22 minutes. The T-Mobile MyTouch 4G Slide came in second, running for 6 hours, 33 minutes. Surprisingly, the iPhone 4S came in a close third--despite all of the issues and controversy--with a time of 6 hours, 14 minutes. The remaining phones had similar, and significantly shorter, running times. It didn’t seem to matter what the manufacturer was, either, as the bottom results were a mix of HTC, LG, and Motorola phones.

Phone Carrier Average battery life

(hours:minutes)
Samsung Epic Touch 4G Sprint 7:22
T-Mobile MyTouch 4G Slide T-Mobile 6:33
Apple iPhone 4S AT&T 6:14
Motorola Droid Bionic Verizon 4:50
HTC Inspire 4G AT&T 4:31
LG Revolution 4G Verizon 4:27
HTC ThunderBolt 4G Verizon 4:23
HTC Sensation 4G T-Mobile 4:22
Motorola Triumph Virgin 4:14