I'm on my second 4S b/c of battery issues and the new device has the same issue as the first. I'm average about 4 hours of usage time which is totally "f ing" absurd. I'm starting to get really frustrated and have even began contemplating buying the GSM Galaxy Nexus for full price. I tried EVERYTHING to make battery time better and nothing worked. I wanted to see if the meter was possibly wrong so I just let it drain until it turned off. I just powered it back up (thus the 5% reading) but this is my usage time. Tell me what I could do!!