Just got a Sprint iPhone 4S couple of days ago and I'm experiencing the battery problem. Everything is turned on except bluetooth. I have 4 push and 1 fetch (every 15 minutes) email accounts, and also have iCloud on.
First night, I completely drained the battery, recharged to 100%, drained again, recharged again, then unplugged the phone right before going to bed. Next morning, my battery was around 75%. I checked the usage settings and it showed that the standby time was around 7 hours while the actual usage was 2.5 hours. Note that I did not use my phone at all during the night.
I did the same on the second night (drain, recharge, and unplug overnight) and the results were the same more or less. Here is a screenshot:
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I figured I would keep testing throughout the day, so I barely used my phone and only checked a couple of emails for about 5-10 minutes total. Rest of the time my phone was on standby.
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This was right before the phone shut off. Note that the phone was actually only used for about ~15 minutes total.
I realize there is a iOS update coming, but was wondering if other people were having the same issue regarding the "usage" when not in use. Also, even if that was my actual usage, doesn't it seem a bit low? I have no idea how some people are getting 2-3 day standby time or 10+ hours of usage. I've never had a iPhone before so I'm not too sure what would be considered acceptable battery life.
Any thoughts?