That's not good, IMO. I get better usage with 20% more. But the standby times are different but it's not that big of a difference. I have on wifi and 3G, and checking I have push on and mail on for manual.
If it is a new i4S then when you finally get everything set up and stop PLAYING with Siri your battery life gets better. I know MANY people having this issue.
When I first wnent to iOS 5 my iPhone 4 eat battery bad, now that everything is set up and I have stopped exploring and playing my battery life has done great. Hope this isyour issue.
I installed ios5 on my iPhone 4 and the battery last the half than before, with ios 4... I already disabled push, iCloud, etc and it's still draining my battery. What else can I do? I hope Apple is going to launch an update soon..
My standby and Usage time runs neck and neck. I have a Genius appointment today. I want them to swap my phone out. This sucks and I'm noticing that my phone is keeping wrong time again. It's a minute slow.
Just a general comment. I think the battery will last longer with ios 5. With email/text messenging/other notices pop ups on the lock screen I can do a quick check and many times do not need to unlock the phone. Also I bike to work so knowing the weather is key. Now I just pull down the garage door (that's what a call it). No need to go into a different app.