I'm a new iPhone user here. Just got a 4s and have also been unhappy with battery life, coming from a flip phone that I only had to recharge once or twice a week to just barely making it through a full day of phone, texting, minor web, and a little words with friends. I get that I'm dealing with a whole different set of capabilities, usages, and power requirements but I'm still not satisfied. I currently have followed all of the advice here with the exception of restoring as new, as it's what I initially did. Just today I put my phone into standby with 93% and 55 minutes of usage. Upon checking it an hour or so later, it dropped 2% an accrued 13 minutes of usage. This is with all location services off, email set to manual, and notifications only for phone, messages, calendar, reminders, and words with friends turned on. No Siri and just about everything off. Just now, I've lost 20% with about 50 minutes of cellular data usage. I did start keeping track of everything yesterday, and got 28 hours standby with 6hrs. 41mins. usage with 14% battery left. Most of it was texting, followed by Words, and a maybe 30 mins. of browsing.