Q: iOS 5.0.1 - Made my iPhone 4S battery performance worse!

I just did a restore as a new phone and my battery is GREAT.

I am upset because not only is my batt. life not improved since updating to 5.0.1, my phone didn't reach 100% after charging all night and is draining while still plugged into the charger!!!!  What should I do, hard reset or just go to the Apple Store?  I don't want to lose my info and go thru all of that if I can avoid it.

Mine went down 10% in one hour after I upgraded today. Then 4% less in 27 minutes. This is without using it at all. I closed all the apps, and only have the Wi Fi on (3G is off).

I noticed every time I pressed the power button to check on the clock, it lost 1%. I've pressed it a couple more time in the past half hour to see if it happened again, and it did.

PLEASE fix this, Apple! This is my first iPhone and the battery issue is getting on my nerves. I knew the battery would run out faster than my old phone, but not at this rate.

Here is another issue with version 5.01, the wifi is going on/off with no reason. I have noticed also on the web few people complaining about the same problem. This is terrible. I am not sure what I have to do. This is the best phone in the market. The samsung galaxy S2 is too big and akward size

I have a 4s 32 GB and the battery is losing 10% per hour without use unless I put it on airplane mode. A friend as the 64 GB and he was at 80% when I was at 30% with similar usage a few texts here and there. I'm wondering if some if hard drive size has anything to do with it.

I upgraded to 5.0.1 and have the exact same problem, the phone was charging all night but showed 92% in the morning, going DOWN instead of up to 100%.  I'm very disappointed.  The battery drain was bad enough to start with, but if it's losing its charge while CONNECTED to the charger, that's totally bad!

It's a bad idea to leave your phone plugged in overnight. Once the phone reaches 100%, unplug it immediately, or else there is current flowing through the cord even though the phone is already at 100%, damaging the battery. My guess is that your phone reached 100% but then got damaged.

OK. it seems i made some progress with the 4S. Before the 5.0.1 fix, i burned down my battery from 100 to 40% in about 8 hours just hanging in my holster answereing an occasional call, sending an occasional txt or email. After the so called fix, it got worse and in 6 hours rather than 8 hours in my holster, it burned nearly 58% so for me the fix did not work.

I decided to try one more thing before i headed to the Apple store. This time i let the battery burn down to zero and shut itself down. Goal was to have as near to a 100% drain as i could get and then do a full recharge. Having done that, my phone has been hanging in my holster for nearly 6 hours and i am at 93% battery power. so, the full battery drain and full recharge seemes to have done something.

I recommend everyone try this before heading back to Apple. Make sure you drain battery so there is no power to turn it on, then plug it in and leave it alon for several hours until it is back to 100% and test it out and keep track of time as battery burns down.

Good luck.

huh? this isn't 1999. leaving your phone plugged in over night will not damage it. once the battery is charged the controller stops the flow to the battery. it could be seen as "bad" environmentally but not for the phone.

Totally unacceptable Apple. After waitng over 2 weeks for tis phone, I activated it on Wednesday and didn't really notice any battery issues with it. I was upgrading from a 3S and the battery on that was kind of weak after 2 years and this was definitely an improvement. On Friday, I get a notification that there is an update available to improve the battery.I thought this ought to be really good since i don't perceive my phone to really have an issue. I upgraded to 5.0.1. Hardly used it at all on Friday and it had a 100% charge on it in the morning. Went to send a text last night about 8 PM and the phone was completely dead. Recharged it with BatteryDoctor overnight to 100% and notice this morning that within an hour it was down to 88%, even though I had not used it at all. Did a reset and recharged it to 100% and again it went down to  90% within an hour even though it is not even being used. I have now turned everything off including the network connection and it seems to be holding at 74%. I need this phone for work and Apple needs to fix this problem or I will have to return it and get somethng else. I don't know how they think they can send out software like this that everyone is going to upgrade to and not even fully test it.

iOS 5.1 made my 3GS's battery life worse. I had alleviated the 5.0 issue by doing a clean reinstall, but it was back immediately after the upgrade.

OK, completely erased all content and reset my iphone. Then I retrieved all my settings etc from iCloud and then I connected my iphone to my computer and resynched everything in iTunes. I did all of that last night. I then completely recharged the battery overnight. Today, it has been working fine.It is now 9 PM and the battery is at 52%, usage is at 3 hours 16 minutes and standby is at 13 hours, 52 minutes. If you are having trouble since upgrading to 5.0.1 with your battery, give this a try.

Same issues. Wish I didnt take the update. I have a 4s

There should be a recall on this phone. 

Hello !

Same probs here in germany.

I have an iPhone 4S and since i did the 5.0.1. update my batterie seems to get sucked by a vampire , although i stopped things like calibrate the compass, traffic, reduce the brightness etc.

Please fix that bugs asap or, give us the possibility to go back to the 5.0.0...