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Mine seems pretty good if not better than before. I unplugged mine from my car stereo last night at about 1.15 AM and at 7.30 this morning, it was still at 100%. Usually it would drop about 5-10% over night. Now at 9.15 PM, it's still at 50%.
 
My phone is better, but if anything my iPad 2 is worse. Drops 10% overnight. Usually it didn't drop at all.
 
Haha BatteryGate?

Well maybe, maybe not. I've got 4 iDevices, and about every third software update I'll have one device go wonky on the battery. Charge to 100% and unplug. Few hours later the device will drop 5-10% or more while my other iDevices might have moved 1%.

Easy fix.

"Reset All Settings"

The device will keep all user content, songs, pics, media, app data, but all settings will be restored to default and passwords will need to be re-entered.

ONE NOTE OF CAUTION!

After the device reboots, you'll go thru the grey setup screens (language, siri, etc) At the end it will ask you if you want to setup as New or restore from backup. Choose setup as NEW. (don't worry, you only Reset all SETTINGS!)

You'll get dumped out into your familiar home screen, and you should be GTG. :)

Hope this helps!

Thanks truckdriversean, I just reset as per your instructions. I'll let you know if it helps. If it doesn't, it's off to the Genius Bar for me...
 
A little better...

So, I've noticed some improvement in battery life since resetting, but it's still not as good as pre-5.1.1. I think I'll just live with it for now.
 
I thought it was just me.

Yes, my battery seems worse since upgrading to 5.1.1 on my iPhone 4S. My wife's iPhone 4 seems fine, as does the iPad 2, but like the OP, my battery life seems to drop a lot faster since updating to 5.1.1, where it was fine in 5.1
 
I thought it was just me.

Yes, my battery seems worse since upgrading to 5.1.1 on my iPhone 4S. My wife's iPhone 4 seems fine, as does the iPad 2, but like the OP, my battery life seems to drop a lot faster since updating to 5.1.1, where it was fine in 5.1

Another "I thought it was just me" person here. Last night, my phone didn't charge, and I dropped about 20% in battery usage (while I'm asleep, all apps closed out).

I'll try resetting my settings tonight & see if it helps any.
 
Mines as good as before.

That aside, under" Usage" and "Standby" mine says "Mobile Usage" and not "Cellular Usage". Now I know this is down to linguistic differences due to British English and American English but is it a settings choice or an area of use choice made by the phone. It's NOT a problem ,just i'm curious. I wonder what i
t say's elsewhere in the world?
 
My battery life seemed to improve . If i remember correctly I only got about a few hours per charge but now it seems to last longer anyways I did only upgrade on Friday so I havent been able to use it consistently . I would post more through out the week to state if It improved or got worse.
 
I did a "reset all settings" this weekend. So far, it seems to have fixed the battery life issues I was having. Fingers crossed it stays this way.
 
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