rapid battery drain after upgrading to iOS 5

Oscar

To hard reset your phone press and hold the power button (on the top of the phone) and the home button at the same time until the apple logo appears, after a few mintues your iphone should restart. Sometime a hard reset will illimate issues that are clogging up your phone, kind of like holding the power button on a computer when it freezes up.

I think there is another issue, I have deleted iCloud and e-mail adds, and diagnositics turned off, notifications off, reset network settings and rebooted the iPhone. Push is Off.

After doing this I left it overnight with no running background Apps.

Battery droped after 8 hours by 25%, on 4.3.5, with all these things turned on (minus iCloud) I would get maximum of 2-3% battery drop,

Also every 2 mins I use the phone the battery drops by 1%, this was not the case on 4.3.5.

Can someone explain the situation now?

I am using iOS 5 on iPhone 4s.

I followed your way doing and it seems to work. Since my iphone 4 lost only 1% in the last 50 min. At the end of the day I'll be more informed about this problem and will reply here the results.

I followed the workflow from HDCrazy, posted on Oct-13-2011 9:27pm.

It seems to work now. This evening I'll proof again the result and post is it here, if other results than this one.

Thanks.

Hi All,

Followed HDCrazy advice by ensuring i have the contacts, calendars, reminders turned off for my gmail e-mail account and it seems like its working but have to test after fully charging the phone..will update you later...

I have tried every single solution here and still massive battery drain. How can I put it back to iOS 4

if you moved everything to iCloud like I did mobileme mail goes away, soo I dont think this the answer.

the dianostic feature I had forgot about. That seems to be a real culprit. will try today.

Thx for all the input.

My thought is - even if you disable it that the phone keeps SENDING the diagnostic stuff to Apple - that still doesn't stop the phone from constantly CREATING these diagnostic reports. Maybe that's what's eating the battery - that the phone is constantly recording and "diagnosing" anything that happens on it.....

Your suggestion seems to have fixed the problem. Here's what I did:

Charged iphone (3gs - 16g) overnight. Battery at 100%

Unplugged from charger let phone sit idle for one hour - battery down to 85%!!!

Deactivated iCloud - saved info to phone.

Did a hard reset - held down power button and home key at same time.

Let phone sit idle for an hour with 85% charge.

After an hour - still at 85%

Reactivated iCloud on phone. Let phone sit idle for an hour - still at 85% after the hour was up.

So now, I'll see what happens to battery life as I use the phone, but this is a big improvement over where I was. My phone was draining like crazy sitting in my pocket and it was warm to the touch. I'd love to know why this works but I'm happy for the fix. Thanks HDCrazy!!

still no luck im afraid after following the suggested advice above....and im watching the percentage drop 😟....is there an issue....

I also folowed HD's advice and deleted all my mail accounts as well as my iCloud account from my iPhone 4. Then I did a couple of hard resets for god measure and then re-setup all the same mail/iCloud accounts. I've been using my phone for a day and a half and the battery life has been great (maybe even better than before iOS 5). The real test will be on Monday when I go back to work and start getting tons of work email.

Deleting iCloud account somehow stopped background connections to push.apple.com

The other 2 background activities that I see are:

....deploy.akamaitechnologies.com

....compute-1.amazonaws.com

Any idea what are they for?

Akamai is used by many companies for caching content, so it's hard to say what the deploy.akamaitechnologies.com is utilized for. I believe the amazonaws is a similar problem, that is, I believe that is their cloud computing services--could be used by many applications. Apple could very well be using both for iCloud services.

Joel

I have an iPhone 4s and experienced this battery drain issue. This was a change from my iPhone 4. (I had only 1GB available on my prior iPhone 4 32GB, so I wanted more space. (Lots of applications--many of which are huge--aviation applications.) Anyway I had no issue on the iPhone 4 after it was upgraded. When I set up the iPhone 4s, the battery drain was ridiculous. (10% per 1/2 hour.) The phone also got hot, which I believed was something to do with the radio.

After trying every suggestion here, restoring the iPhone, restoring the iPhone and starting from scratch, nothing worked. I reconciled in my mind that it's a defective handset. I exchanged it today. (This is no small feat, by the way, as the store was an absolute zoo.)

I will monitor the progress tomorrow. It might be worthwhile for people to start stating what carrier they're using their phone on, as well as the model (4, 4s, 3GS). Until I saw this thread, I thought it was my phone. Now, I'm starting to think there is a problem with iOS5, and constant data transfer.

Joel