I'm not concerned about the battery life. Coming from an iPhone 4s (I was one of the lucky ones to not get the bad batch of phones with the battery problem) if I start my use at 11 am coming from a full charge (it stays on a dock all night) I can make it last a good 8-12 hours with moderate to heavy use. (I use an iPad for gaming so my phone only gets heavy texting, GPS, calls, Facebook and forum usage and some Zynga games like WWF, and seldom browser usage). I am a stay at home mom so I'm around a charger all day and if I leave the house my phone goes straight on the car charger anyway. Plus I never keep my display on full brightness, that's enough to blind me!