iOS 5.1.1 have batery loss

I see no such problem here.

Let the phone battery drain completely. Make sure the phone turns itself off. Then charge it back up to 100%. This has worked for me in the past when my phone's battery was draining quickly.

I'm having the same issue. With 5.1, my battery drain was decent. I could go a full work day with decent usage (text, web browsing, app usage, etc.) and end the day with 50-60% battery. After updating to 5.1.1, I can almost watch the battery drain, with no apps running or using the phone.

I had a voice call that lasted about ten minutes and my battery dropped almost 10%. I'm going to do a restore and go back to 5.1. I can't make it through a workday like this. My phone has been off the charger for approximately an hour (100% charge). I've barely used it and it's currently at 93%. Btw, I have an iPhone 4. If apple hasn't fixed this issue by the time my upgrade comes around, I'm going Android.

You can't go back to 5.1 if you updated to the new version. As leann suggested let your battery drain completely and then do a full charge.

It's all in your head. You're just looking for something to complain about because it had the word "Improvement" and "Battery" in the update.

I'm not sure if that was directed toward me, but it certainly isn't all in my head. I experienced a huge battery drain when I went to ios 5. It did seem to slow *some* after 5.1. It was better than it was. I updated yesterday to 5.1.1 and the battery drops quickly. I realize that it doesn't seem to be widespread and it may not be, but it is happening.

If I am not using my phone and have no apps "running" in the background, I'll loose a few percent of battery (which is expected) at the rate of 2-4% per hour. But, with use, I will drop percentages per minute. It's even worse if I'm using voice. I use my phone for work purposes and have noticed a dramatic decrease in battery going from 5.1 to 5.1.1. As I have typed this using my phone, which has been just a few minutes and have lost ~3%. Before the update, I would've lost *maybe* 1%.

I am having the same issue, my phone had 13% and has already gone to 10% while i have been signing in to reply to this. No software added, just updated to 5.1.1 this afternoon.

Going away this weekend and can have y phone like this, this whole battery issue is becoming a joke to be fair!

The 4S was supposed to have a better battery than the 4 and I have had worse battery on my 4S since day 1!

Let your battery die out and then do a full charge.

Today I have noticed that my iPhone 4 battery seems to be draining faster than normal. I'm going to let it die and then charge it fully and see what happens.

Well it won't be anything to do with the iOS 5.1.1 update as it didn't do anything to the battery.

It's probably all in my head since I have been reading this thread. 😉

Since when has that mattered? Any kind of update can break anything that wasn't mentioned in the Change Log.

Yeah like we are making this stuff up 😁

And now my phone has completely died sitting on the sofa not even being used.

Sounds like a hardware issue.