iphone battery dead after ios 5 update

I noticed the same issue and it seems that in addition to the turning off of icloud etc the largest difference for me was when I turned off the diagnostic tools (Settings -> General -> About -> Diagnostics & Usage -> Don't Send).

Sorry apple but you I won't be sending Diagnostics simply as they eat up too much of my battery.....

My previous post about switching from wifi to 3G was not correct. I still had problems. I what worked for me was deleting every mail account I had and then adding it again. Battery is normal.

We all seem to have different solutions. MY solution was a hardware replacement. The new iPhone is discharging at a normal rate (about 5% an hour, roughly).

My suspicion is that like the famous "death grip" problem with dropped calls, this is an issue with a subset of iPhone hardware: the majority is not experiencing a problem, but some of us are just unlucky.

This is beginning to get attention: osxdaily.com has an article on it: http://osxdaily.com/2011/10/16/ios-5-battery-life-fix-tips/ but no solution.

Even though I'm very pleased with Apple for replacing my phone (and that the replacement worked), it has been a FAR from painless process: the restore from backup mostly failed: my texts were restored about about 25% of my apps, but my folders were lost, and iTunes was stuck in an infinite loop where it would refuse to sync and kept saying "Do you want to set this phone up as new or restore from backup?".

I finally gave up and said "set up as new" and then cancelled the process. This seemed to kick iTunes out of the infinite loop, allowing me to sync. I had to manually rebuild all my folders, a very time-consuming process, and since I have about 60GB of music I am STILL in the process of manually restoring that subset of music I want on my iPhone. My wifi networks were also lost: I've set up my home network but any other networks I had set up elsewhere will have to be re-set-up.

On the whole, however, I'm happy with the resolution. It may be that different people will need different solutions.

Well, now I have switched iCloud back on and I'm having no problems with battery drain. Apple haven't sent out a 5.01 update, so I don't know how that changed but, for me, it has.

I am seeing the Calendar items from Exchange in the Notifications screen blinking also. I think this is definately related to the issue I am seeing with my iPhone 100% to shutdown in 6-8 hours!

The posts on these forums include many conflicting inputs on cause - it seems that there is likely more than one issue.

When you first use your phone, the battery guage does need to calibrate so you may see some fast drain, but should even out.

If someone has syncing or another service that is transfering lots of data, you will see a lot of battery drain too. There will be differences in turning on/off some GPS/3G use items, but probably minimal impact for those here that have major issues.

i'm going to try removing Exchange and then adding back in, enabling one service per day until I find a culprit. Will report back in a few days if I find a smoking gun - Exchange calendars and reminders is where I plan to start!

I was having issues with the Verizon version of the phone. Finally this morning, I turned off Documents & Data from iCloud, and that has resolved the issues on both my phone and my wife's phone.

I seemed to have fixed mine, I deleted the iCloud email account from my email accounts. I also deleted all of my other email accounts, reset the network connections, and re-added my gmail account. However I would guess that it was the iCloud, and not my other accounts or the network reset. I had tried the network reset a few days ago before I deleted all my accounts with no luck.

I was charged to 100% around 5pm yesterday, and I haven't used the phone that much, and i'm down to 77% this morning.15.5hrs later.

Yea i noticed if i had my iCloud present - either active or inactive - my mobile data usage for sent and recieve will keep increasing - when i deleted my account - the figures stayed constant

Updating from my post of yesterday . . .

First of all, thanks to all for the suggestions and feedback. Most of the suggestions did not work. iCloud made no difference. However, when I deleted my work email exchange account, the difference was noticeable. I went losing 20% power overnight to only 5%. I don't understand why, since I had the account set to "fetch - manual".

Unfortunately, this is not a permanent solution for me. I absolutely need my work email on my mobile phone. I am hopeful Apple will issue a fix for this ASAP.

Thanks all. Good luck.

I confirm this again.

This is purely a exchange calendar and ios5 related issue.

If you add your exchange server, select ONLY MAIL.

and then set to download using MANUAL, everything works out fine, battery lives longer as expected.

But we cannot live without PUSH,

We can't be FETCHING exchange emails, when it can PUSH.

Since I am an exchange server admin, I have not seen any performance issues on the server, or stale connections, or any connections with too much data transfer. (in case of PUSH, the phone is always connected to port 443 on the exchange server, that connection has NOT shown any increase in bandwidth, which means that the phone is not requesting too much data from the server, nor is the server trying to push a lot)

This most probably is a bug in ios5, or incorrect cloud or phone connectiity configuration towards apples networks or a memory leak causing the battery drain.

for now i will have to live without push and without calendar, which is rediculous.

for me its low priority because i am eligible for 3gs to 4s upgrade soon.

I hope apple pushes new update soon.

I am expecting that to happen over the air.

For those that have Exchange enabled I think I have found a fix - would appreciate feedback. I deleted and re-enabled my Exchange account. However, prior to doing this I notice that on the Notification screen, the Calendar events from my Exchange account were flickering, as if being re-written numerous time. When I re-enabled, I went to Settings/Notification and removed Calendar - moved to Not In Notification Center. Then, under Settings/Mail, Contacts, Calendar I turned off new invitation alerts. I"mn not sure if the last one is needed!

Result - 2 hours later and some emails I've gone form 100% to 97%!

It seems to be an issue with the notification software. if you don't have Exchange, you may want to check our notifications to see if anything is flickering, and remove whatever is from the list.

Dilipb-

I wish you were correct, but I added my exchange email (but not calendar) and kept it on fetch-manual, and the battery drain is happening once again. FWIW, I am using a 4S, so unless/until Apple fixes this, you might have a problem when you upgrade.

dilipb,

I just recieved a support request from Apple to log my power.

You're right, MSX Push IS a real sucker of power. But...I've lived with it for years, so I'm VERY familiar with its appetite.

HOWEVER...my new 4S was dropping battery life about as fast as you could count (slight exageration). I drilled down until I found that turning OFF Documents & Data in iCloud helped substantially, if not completely!

Food for thought.

Steve

Yeah, similar isssues, similar solutions, not all work.... Here's my post from another thread...I would try deleting email accounts and re-add. Battery issues are historically present after any update. You could try unchecking every app inside iTunes and have it remove from phone, then add back one at a time and use for a while to see if an app is causing it. I always restore, and setup as a new phone. Corrupted iTunes backups also been historically present after any update. I sync all apps and music with itunes, contacts calendar notes with Outlook on my machine. I copy pics and vids down to my computer into My Pictures to get them out of Camera Roll, and resync back, so I could loose the phone and still have everything...I have everything backed up OUTSIDE of the iTunes backup. (I don't care about SMS messages)...If you can do the same with all your important items like contacts, pics, vids etc., do a restore in iTunes, and setup as a new phone(not restore from backup), then sync back everything. I would not put any apps or emails back on right away. Use it for a day or so and check battery. Turn bluetooth off and wifi if ur not using it. Also maybe setup email to go fetch every hour instead of push...But run without any email or apps for a while like i said, and check it. I'm seeing iOS 5 related symptoms and solutions here also...I'm still on 4.2.1, and won't be going to 5 anytime soon, as there are other known issues with SIM card reader being made inoperable by iOS5....

I have a lot of other things turned off too....

icloud..

nothing in "in notification center"

no location services

no sending diagnostics

no bluetooth

i use wifi all the time

imessage is ON

Basically anything that will keep sending and receiving data: I have turned it off.

But yes, I agree with you, working in FETCH or MANUAL mode is not the way we want to use our iphones.

So yes a bug fix is really required.