iphone battery dead after ios 5 update

I have reset network conenctions and deleted Exchange accounts and then put them again and stand by time seems normal right now. But when using wifi only (browsing or logging into facebook etc.) battery consumption decreases %1 every 1-2 minutes.

Location services off, notifications off, iCloud off. (which makes iphone smartphone 🙂

I was having th same issues and I tried everything mentioned with no results. I did notice going to work this morning that my battery is normal.

I'm noticing the difference might be the wifi. Last night I was on my home wifi and now I'm on 3G.

Hope this helps the apple people monitoring this board :). Love the iOS5! Make me wonder how I lived without it.

Update... I've added back specific notifications and it appears to me that having the calendar app listed in the notificiation center has a bug. That seems to be the source of my battery problem. I also noticed the items listed from my calendar in the notification center are blinking or possibly scrolling too fast in such a way that they are unreadable. It seems to be a bad loop in the process that apple needs to address. For now, I'm just leaving calendar out of notification center. I should point out that I too have had the exchange issue mentioned in several posts, but had that prior to ios 5. Whenever I start seeing errors after trying to delete/move emails, I usually have to delete/add back my exchange account to solve that problem which includes heating/battery drain.

Okay so how do you delete the MobileMe email account when the iCloud upgrade deleted it for me????

This is just crazy. By noon my phone is basically a useless brick!!

The only thing I haven't tried is a Hard rezset. Not sure how to do it????

Maybe a Fix?

I found what might be fix for my 3GS

I connected it to iTunes selected Restore to set it back to factory settings and then DID NOT recover the backup.

This left me with just a clean install on the phone. I set up my iCloud account and configured my main gmail account and nothing else.

I took the phone off charge at 100% this morning at 07:30, now at 20:46 it's still showing 80%

I'm going to add my other accounts one at a time to see if any particular one triggers the problem again.

Seems like something in my backed up configuration was triggering the problem.

Reconfiguring everything from scratch is a bit of a pain but at least the phone will last the day now!

Update... since my last post. I haven't charged my phone yet. I still have 25% battery life with 19hrs and 44 standby time and 6 hours of usage time since last charge.

I have spent 48 hours trying to figure this out. The problem is with exchange server and icloud syncing. If you turn off icloud mail, calender, contacts, reminders and notes syncing (i.e. everything that connects to the exchange server) then the email will work fine and the battery drain goes away. This worked on both my ipad 2 and iphone 4. Trial and error narrowed down the syncing options. Photostream still works fine and isnt draining the battery.

Some work needed by apple to figure out why.

Hope it welps.... ;-)

Reading the comments, many of you are using icloud. I haven't downloaded Lion yet (still using10.6 snow leopard) as that would exceed my ISP's current monthly download limit. Will probably wait till I can get a better package. My point is, that my problems haven't been caused by icloud because I'm not using it yet. I do have mobile me/macmail (since 2003) and will need to migrate it in the next few months but it forces me to upgrade to Lion in order to do so. Disappointing.

There are clearly quite a lot of bugs in IOS5 that need ironing out. Personally I think that's inevitable when it's being asked to do so much. In the UK icloud will only give us access to a few features and not itunes music syncing anyway. I'm not interested in that so no problem for me. I prefer to stick to sync with imac. Too much data to download otherwise.

I also found that some itunes playlists would not play on iphone 4 after update. I unticked "convert all higher quality songs to 128 AAC and that worked. They take up a bit more space but are mainly stuff I use for my work with music students (aural tests) so need them every day.

After much tweaking, I'm now finding that I'm getting normal (or possibly a bit better, not sure yet) battery life again. Might have been something to do with mobile me or notifications, or battery recalibration, or traffic notifications, et. etc. Tried all of these and more.

Hope this is of interest.

After my upgrade, my battery seemed better than before. I'm using iPhone 4.

My current battery is 96%

Usage - 26 minutes

Standby - 11 hours

My only issue after the upgrade is iMessage still "waiting activation" but I attribute that to poor wifi here at home.

I noticed the battery problem within hours of activating my new iPhone 4S on Friday. It drained 1% for every minute on the phone, and dropped about 25% in idle model while I slept overnight. I took it to the Genius Bar on Sunday, and the tech told me it was probably not the battery, but a corrupted file I had imported whe I upgraded from my 3S. He told me to go home and restore the phone as new, which I did. That did not work. I had the same problem.

I took the newly restored phone to the Genius Barthis morning. They actually replaced the phone. Wary of a potentially corrupted file, I set it up as a new phone. Within an hour, it was clear I had the same problem with rapid power drain.

I have done virtually everything recommended on the boards. I have deleted most apps. I have turned off most notifications. I have disabled Siri. I have set my emails to fetch instead of push. I have turned off location services. I have reset the network settings. And I have restored the phone again. Nothing seems to solve the problem. Just playing with settings for 10 minutes will drain it 5%.

I am at wits end. This is simply not a useful mobile device for me. I fully charged it 75 minutes ago, made one 6-minute call, checked email twice, looked at one webpage, and it dropped 12%. I will need to carry a charger with me and plug it in constantly during the workday. If I am out of the office for the day at an event, it will surely die my noon.

Apple, please HELP!

@newspin. I had the same problems. I found out it was constantly attempting to upload/download. Go to the phone app, is the little wheel at the top spinning to show data transfer? I tried everything then thanks to another forum member deleted my original MobileMe settings. It's been fine since. Also, try deleting your casche and safari history. That made a difference too. I'm back to having a full day's use from one charge now.

Is your corporate email an MS Exchange server? Is that account also syncing Contacts, Calendars, Contacts or Notes? You might want to check with System Administrator of the email server and have them check log files on your account to see if that will help find any sort of glitch going on on the server end.

I have seen issues with battery drain on iPhone ever since iPhone 2.0, when it was first introduced. Apple is licensing the actual Microsoft ActiveSync technology for use on the iPhone.

Sometimes deleting the account and then setting in back up will fix it. Often there is a glitch with the Exchange server - which can sometimes be fixed by logging in to Outlook on your work PC or by having server admin check error logs for problems. There's a lot going on there with mail, contacts, calendars, and notes. And now iOS 5 adds Reminders (tasks.)

FOUND THE PROBLEM FOR ME...

I didn't take me long to identify the culprit since I've been using iOS 5 beta without any problems.

After deleting iCloud and Exchange accounts, disabling Siri, etc., the one item I wasn't sure about was DATA & DOCUMENTS. I've had that turned off for an hour, and my battery life hasn't budged. Quite a success considering that it had dropped 20% since driving home a couple hours ago.

Seems to be working for me... Thanks!

As you say... a pain to reconfigure all the apps, but at least, I have a working phone now...