5.0.1 update--even worse battery life

Battery drained 20% in 7 hours last night just sitting on the bedside table with no apps running and wifi off. Battery life is shocking and they need to sort this. Using the Internet over 3G this morning and battery's losing 1% every 5mins. Clearly something wrong.

Same here battery goin down quicker now than before. Anyone found an answer?

Infatti! Dura veramente poco! non è possibile! spero risolvano in qualceh modo!!!

I am one of the original posters in this thread. Immediately after the update to 5.0.1 my 4S suddenly drained the battery more quickly than before. Yesterday I did a complete discharge (by running a game) and then recharged it to 100% again, and this seems to have helped indeed. My phone is now back to the pre-5.0.1 battery life. Tonight it drained only 4% withing 8h in standby, which I think is more or less what is to be expected.

If this is indeed a necessary step then I think Apple should have stated clearly in their release notes (or even with a popup message to the user, if that's possible) that after applying the update the battery needs to be recalibrated with a full recharge cycle. Maybe they thought that people would eventually do this anyway during normal usage, so no need to say so explicitly. But they should have realized that after an update that is supposed to improve battery life people will look VERY closely at their battery statistics and cry out immediately if something is not working as expected.

I did The complete cycle charge , but it is business as usual! the battery lasts a maximum of one day!

Hi all, I had the same problem as many of you have. I found out that after removing microsoft exchange account, the battery has been back to a normal stage.

Once I tried to add my exchange account back, the battery was drained quickly. Removing it again and the battery became normal.

Worth trying! If this works for you then hopefully in the next iOS update, Apple will fix this battery problem so we can use microsoft exchange accounts as normal.

Good luck guys 🙂

Do you use Microsoft exchange account?

I have to agree with this post..l my iPhone4s gone down from fully charge to 83% in 2hours

Wow apple. This is worse than ever. After updating my iphone 4s to IOS 5.0.1 yesterday I charged the battery to 100% then went to bed and after 7h of sleep I find my phone with 65% battery charge (no incomming calls or messages). This is really not acceptable and a drop of 5% per hour. With IOS 5.0.0 it was 4% within a 7h standby. Fix this as quick as possible.

note for services:

wifi off

bluetooth off

icloud sync off

push notifications all off exept calls, messages (non incomming over night)

location services (all off exept map and siri):

maps on

siri on (in use once in last 24h)

location services system:

all on exept timezone

I think battery calibration may definitely play a part. I use system activity monitor app and when my ipad reached 2% charge it was reading -2h20mins until empty.On my iphone 3GS at 2% was reading -40mins. This is a clear indication that the battery capacity is not calibrated with the percentage guide.

My IPhone 3Gs battery used to last one day and half, but now after updating to IOS 5.0.1 it drains so fast like 10% per hour. Is there a chance to downgrade to IOS 5.0.0 again??

I upgraded my iPod touch 4th gen last night, didn't have a problem with battery life before with ios 5m, now its been off charge for just over 2 hours and already lost over half of its charge

This is ridicolous.

At start (bought it a week ago), with medium-low usage, the battery lasted a working day, more or less.

Now, after 5.0.1, it's a complete and utter DISASTER: after a night with the phone turned off and charging to 100%, I turned it on and left it without using it for 45 minutes.

Well, the battery drained to 85% not doing anything, just laying there in standby.

When I took the phone and visited a couple webiste the battery dropped to 80%.

Unbelievable.

This baby is going back ASAP, I'll never trust Apple with 800 € worth of telephone from now on.

It's not like it's a secondary issue, is it? It's the battery, the lifeline of our 800 € brick.

Come on.

Yes, I'm using two Exchange Accounts. One for work, which is set to manual update, the other is my Google account, which is set to push.

my iphone 4 is fine i think -...- i charge it at 8 pm and woke up at 6 am the battery was still in 100% the problem is when i listen to music just for 5 minutes the battery drops very fast from 100 to 94 and it keeps draining until it gets to 50 in an hour )): is this nomal ??? its started after updating to ios 5.0.1