iphone battery dead after ios 5 update

similar issue here: since update to iOS 5, batery drain is ~ 25% per hour. I've turned off most of the bells and whistles, power drain continues. no downloads are happening, i've even turned off cellular data , icloud, bluetooth, all location services, you name it... still the battery drains away..

Same problems here with a 3gs. Left home at 6:45 @ 100% and was fully drained by about 10AM. Phone gets hot, so something is going on (data being sent). I had the cloud stuff turned off as well as the diagnostics.

Although I like some of the new v5 features at face value, this is a killer for me and no matter what features are available, a brick remains a brick.

I've solved the problem by resetting network settings (somewhere in Settings / General / Reset, IIRC). Currently 97% of battery after 2 hours unplugged (used about an hour for listening to the music). 3G is on, cellular data is on, wi-fi is on, bluetooth is on, iCloud is on, push is on, geolocation services are on.

I feel happy.

(iPhone 3GS)

Had this same problem yesterday with my iPhone 4, but seems like mine is resolved. I left it unplugged all night and it was only down to 97% Some things I adjusted after seeing this and a couple other threads yesterday:

iCloud, turned everything off except Find My iPhone. I wonder if having "Documents and Data" on was causing some kind of long-running transfer? Still not sure, but that could have been it. At the moment I'm not feeling like I need iCloud features anyway so this isn't big deal for me so far.

Mail, check this if you have an Exchange account set up: I use an account set up as Exchange to talk to a Zimbra server for work email. In iOS 5 there is a new item to sync that it calls Reminders. Not sure if it's related to the Reminders app, but because the server on the other end is Zimbra that sounded possibly iffy so I turned it off. (It may just be a renaming of Tasks, and Zimbra does sync Tasks now, but still.) I was looking at this anyway because there seemed to be a delay/problem with email being pushed from that account. The mail problem seems to be resolved, whether it had anything to do with this or not. It may not have anything to do with the specific sync items either; it's possible some error with the mail sync was causing the battery drain perhaps? Just something to look at maybe.

Also, at least once in there I turned the phone off and back on. Simple, obviously, but make sure you've done that at least once since you noticed the power drain. The restart alone could have been the fix because perhaps some process lingering from the setup was still trying to do something.

These are the main things I can think of zeroing in on after noticing the problem and reading some threads. Somehow this is resolved. Possibly it was resolved simply with the phone restart, but I did all this around the same time so can't isolate which item may have been the key.

I guess I'm glad it's not an isolated incident, but this problem really *****.

I have a 3GS that until now has been working just fine over the previous OS.

I did my install Wednesday night (for which it took several hours and probably 30-40 attempts to even install iOS 5), and the battery life was fine overnight between then and most of yesterday. (During a shift at work, and through the evening with my other job)

Found out around 2AM that the battery had died when a friend told me they'd texted me and I hadn't heard it come in. Battery was dead, and plugging it into the Mac nor AC power would get it charging/booting without a hard reset.

These aren't the only problems I've been experiencing.

I've got programs crashing on launch, or crashing or closing themselves after a few minutes of idle or regular use (including Apple apps like iPod and SMS). I was in the car playing music and it would just stop playing things and reading texts and it would just close in front of me.

So, I charged the phone from nothing to 50% and went to bed. Between 3AM and 7AM, the phone had died, and I would have missed the alarm I set if I hadn't just happen wake up.

The only thing I can offer is that I had removed and reinstated the iCloud account on the device because it was first displaying two iCloud mailboxes after the update. Since doing this, these problems have occurred.

Thanks that really seems to have worked. My battery actually increased a bit after I reset the network settings.

May have it sussed on my iPhone4 .I've had battery issues since ios5 install, tried everything on and off with location and notifications, but when I clicked on the phone icon, I noticed that the little "sun" spinny icon thing was showing that it was sending or recieving data no matter what I did (apart from shut down cellular data, which would make the phone useless, obviously)

But then I decided to check safari, it had 5 pages open, so I shut them all down then cleared the cache and history etc. I am now having minimal battery drain (so far) and it was almost visible before (about 5% everyv ten minutes)

Hope this helps. It may only be a temporary fix, but after an hour it's still fine.

So far I have tried everything. Everything that makes the iPhone a smart phone is turned off and still draining fast. Help apple

Yesterday I rebooted, turned off all iCloud. Things seemed to be fine. Phone doesn't get warm as it was before and battery life is what I expect from ios4 more-or-less.

Then I began turning iCloud on one at a time. I was running all night with mail and calendars on and the battery seemed to be ok in the morning. So I turned the rest of iCloud on and the phone started warming up and the battery was draining.

I haven't narrowed it down beyond this.

I just tried resetting network settings and it doesn't seem to work for me. I still get battery drain.

-Steve

I'm having the same problem here with my 3GS.

This morning I removed it from charging at 100%

I left it on standby and activated the screen 4 times only to check the battery level, no calls, no text messages, no e-mails or web surfing.

By midday my battery was at 10%

The handset takes much longer to charge up than before too.

On my normal usage I reckon I'd have to recharge my phone three times a day to get by! It's just not a practical proposition.

Yesterday, with a full charge at 7.30am, at 6.30pm, my phone turned itself off having run totally out of power. Prior to the upgrade, it would be down to about 45 to 50% of charge by this time.

Today, between 7.30am and noon, the charge fell from 100% down to just 8%. I had to get out my backup charger.

I've also noticed that the phone appears hot to touch at times too.

My usage patterns haven't changed. Despite what others have suggested, I've not been using the phone any more than normal, as I'm not too interested in most of the "new" iOS 5 features. I turned off many location services at lunchtime and shut down unused apps, but that's made no difference. And I'm not sure why I should change how I use my phone just because of an upgrade.

Right, here's what's happening with mine. If I go to the phone bit, the little data transfer icon at the top flashes on and off, when on wifi, I can see that data is being transmitted due to my router also flashing on the data light. It flashes at the same time as the icon on the phone. Something is being transfered, draining the battery. I have tried everything on and off, it carries on. When I turn wifi off, it is still transmitting via cellular. I reset my usage and in just five minutes, it uploaded 200kb, and downloaded 171kbs. Obviously this is an issue because of data plans etc. I have now got no idea what is causing this, I'm not happy. It is definately sending info to/from somewhere. So basically I am having to turn the phone off to stop this happening.

Same issue here. 3GS, IOS5. I took it off the charger this morning at 7:30. By 11AM the battery was down to 28% and the phone was hot to the touch. No usage other than checking e-mail once.

I reset the network settings and also see an improvement. Battery drain is considerably less and the phone no longer gets hot.

Hi,

Suffered the batter drain problem on both my iphone 4 and wife's 4GS. Resetting the network connection did not help me. I ended up going the delete and re-add my mail boxes as well as doing a hard reset after deleting the boxes. Then i shutdown icloud except for findmyiphone. I noticed my phone was hot and checked the usage and the usage time = standby time under (settings/usage) which means the phone basically was running from the time i pulled the electric power off.

I have icloud mail onand everything else is off except find my iphone. I am going to try turning on the services on one by one and see what happens. I have a feeling either bookmarks or documents & data are the probllem. If the iphone is going to upload all my application data to icloud that could be a lot of data to upload but I am guessing. Other problem may just be icloud server overload which is causing re-tries and burning the battery.

Hope Apple gets a bulletin out on this