I am coming from a iPhone 4 ( no experience with 4S or a 5 ) and I've been reading on here about all the horrible battery life on their iPhone 5 and 5S. Maybe its because I am used to the very horrible battery usage on my iP4 but to me.. I think the iPhone 5S has excellent battery usage.. Last night approx. at 9 PM my iPhone 5S was fully charged at 100%... I unplugged the phone laid it next to my night stand and went to bed early. I woke up this morning at 6 AM and to my surprise.. I am still at 100%. On my iPhone 4 in this same scenario, I would be at around 90% to 93%. I am impressed.. Does everyone else with a iPhone 5S have the same experience?