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My battery life has been dreadful. I'm getting like 4 hours of usage on a full charge, and it rarely makes it through the day. I restored from backup. I hope the next beta improves this because I'm not even using the phone heavily.
 
Disabling the wi-fi did the trick for me, it went from 8 hours after a full charge to 24+, don't really know why though :\
 
My fix was to:
- Turn off notifications for weather (and associated location service)
- Turn off everything iCloud (herd it isn't working yet anyway ?)

I can confirm that this works.

I had terrible battery life yesterday and day before that. The phone was also running very hot. Today I disabled the weather and stocks apps in the notification setting and the battery life is much better. The phone is also a lot cooler.
 
it is might possible that the IOS 5 battery killer.
the more applications the higher temperature. it will do harm to the battery especially the phone.
see this post:
https://forums.macrumors.com/showthread.php?p=12734417#post12734417

Could have just posted that here. :)

I can confirm that this works.

I had terrible battery life yesterday and day before that. The phone was also running very hot. Today I disabled the weather and stocks apps in the notification setting and the battery life is much better. The phone is also a lot cooler.
See, this kind of defeats the purpose of trying out iOS5, if you have to disable everything. Mine got hot enough to fry eggs just from playing my music for a few hours.

The excessive heat is exactly why I restored my ios5 install back to 4.3.3.
 
I dunno what you guys are doing but the only time my phone gets warm is when i've been on the phone for over 30 mins or i'm playing a graphic intensive game or i'm streaming HQ videos.

...and i haven't disabled stocks/weather. It's been 12hrs and i'm still at 89%

*shrug*
 
mine is fine, only slightly worse than 4.x.....not sure though might be the same?

im at 40% and have 4 hours usage.....
 
I dunno what you guys are doing but the only time my phone gets warm is when i've been on the phone for over 30 mins or i'm playing a graphic intensive game or i'm streaming HQ videos.

...and i haven't disabled stocks/weather. It's been 12hrs and i'm still at 89%

*shrug*
I'm sure that's one of the many kinks that will be ironed out in coming betas...
 
A hard reset seemed to have fixed the issue for me. the phone runs a lot cooler, smoother and the battery is nearly back to normal.
 
A hard reset seemed to have fixed the issue for me. the phone runs a lot cooler, smoother and the battery is nearly back to normal.

how do you do a hard reset again?? i know noob question but i forget these sorts of things
 
mine is fine, only slightly worse than 4.x.....not sure though might be the same?

im at 40% and have 4 hours usage.....

Mine was totally fine for a whole then started just eating up batt. I'll try turning weather off and see if that helps, I haven't even turned on iCloud so that us def not it.
 
Seems if location awareness is on all the time it kills the battery. IE if you have a reminder in that new app with a location set for it go off when you leave or arrive. Other then that it seems a little less gooder.
 
My phone is always dying on me for some reason since I went to iOS 5. I think I might go back in a few days to 4
 
Today I had my phone in Airplane mode. All radios were disabled. I listened to local content for 5 hours. The screen was off for almost the whole time. With an additional 2 hours in my pocket with no audio playing, the battery was exactly 50%. This much better than with just the cell data disabled, and obviously far better than with data on. This is still terrible compared to iOS 4. I would get better than this... with data enabled... while streaming HQ Pandora and downloading podcasts over 3G.

I plan on doing a fresh install of iOS 5 tonight and testing it tomorrow.
 
I did a fresh install after my original restore from backup install and it made no difference.
Battery life was still worse when compared to iOS4.
If you want a real laugh try turning on the mail notification and adding it to your lock screen.
I went from 100% to 10% in 4-hours with the phone in its holster getting no use at all.
 
I did a fresh install after my original restore from backup install and it made no difference.
Battery life was still worse when compared to iOS4.
If you want a real laugh try turning on the mail notification and adding it to your lock screen.
I went from 100% to 10% in 4-hours with the phone in its holster getting no use at all.

i'm going 10 hours before getting to 20% on iOS 5 on my iPhone 4 on a clean install. with mail notifications on and others.
 
I upgraded and restored from my 4.3.3 backup. I only did 2 things once the upgrade was done.

I did NOT activate iCloud.
I did NOT even touch Reminders.

After all day today, honestly, my battery did better than it usually does on 4.3.3. With more days of testing I expect it to average out to about the same.

...oh, and I did tell it to show mail on the lock screen. This had no effect on mine.
 
A hard reset seemed to have fixed the issue for me. the phone runs a lot cooler, smoother and the battery is nearly back to normal.

Same here. Looks like there is a process that isn't going to sleep like it should. If you use System Acivity Monitor, it should say ~5% CPU use on the 4, which is all from the app itself doing rendering. In the case where battery was dying too quickly, it was reporting 20-30%. Something was spinning until I did a reboot. Was definitely an Apple daemon too, just don't know which one.
 
Just to chime in...... my battery would typically be at 20% after a full day of epic usage between 10am-2am the next day, now I'm at 20% by 6pm
 
To all of you concerned about iOS 5 battery, remember Apple would never release an OS that devours your battery so quickly. It's in Beta and it's obviously meant to be fixed. I don't see the next iPhone having double battery capacity and the rest of iPhone users having terrible battery life. I'm not even slightly worried about it. Sure, battery will probably take a hit with the final iOS5 release, but that's just because of all the new features and push options.
 
To all of you concerned about iOS 5 battery, remember Apple would never release an OS that devours your battery so quickly. It's in Beta and it's obviously meant to be fixed. I don't see the next iPhone having double battery capacity and the rest of iPhone users having terrible battery life. I'm not even slightly worried about it. Sure, battery will probably take a hit with the final iOS5 release, but that's just because of all the new features and push options.

I think we all understand that this is a beta. I don't think anyone on this forum is really worried about it. The point is to try and find the cause of the extreme battery issues in iOS 5. Yes, it is a BETA. The point behind a BETA is (a) for devs to test their apps, and (b) for us to tell Apple about bugs so they can be fixed for the next release. That's all I'm trying to do here.

====

Last night I did a fresh install and set it up as a "new iPhone." I only installed a few of the apps that I really need, and set up MobileMe (or do I call my paid MM subscription iCloud yet?). I had cellular data disabled today (not airplane mode). I listened to locally stored podcasts for 7 hours straight with minimum interaction. At the end of that 7 hours, my battery life was.... 88%. If your recall from page 2 of this thread, the same test with a "restore from backup" resulted in 23% battery life after 5 hours. That is so much better. That is probably pretty comparable to iOS 4.

Tomorrow I'll test with Airplane Mode, and Thursday with all radios on. I'll put all of this stuff in a Numbers spreadsheet. Obviously none of this is scientific, but who doesn't love looking at numbers?
 
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