So this bigger casing would allow for a bigger battery right?
What's the 4s battery like now? 5 will be my first iPhone, and my Droid X gets about a day and a half of normal (not a ton of browsing/media) use with a charge.
Basically, I charge my phone every night anyways. Can you with 4/4s' make it through the day?
I have zero problems with the 4S battery. I'm a moderate to heavy user and usually have 1/3 - 1/2 my battery left at the end of the day.