Teardown of Apple's iPhone 4S reveals larger battery, new baseband chip | AppleInsider
Apple iPhone 4S A1431 Battery Replacement Kit - Extended Life — NewPower99.com
Dual-core A5 CPU, said to be “2x as fast at CPU tasks” Dual-core graphics, up to “7x faster than the previous iPhone” Battery life estimates: 8 hours talk time on 3G, 14