iOS 9 Beta battery life

im having the same issue, do you think its because of going from 8.4 beta 3 to ios 9 beta 1, i did this not knowing that they were releasing beta 4 the next day. would the battery be better if we went from 8.4 beta 4 to ios 9 beta 1?

That is a great question. I forgot to include in my write up that I when I restored, I used an iCloud backup from iOS beta 8.3. I did NOT use a restore from either a released version of iOS 8 nor did I restore from a backup after I had orignally upgraded to iOS 9. I don't know if that makes a difference or not. I chose to NOT backup my iPhone after I upgarded to the the iOS 9 beta becuase if I had to restore, I (1) didn't want to restore whatever error setting may have occured while playing with iOS 9 and I've tried to roll back in prior betas and found myself off a cliff (Wile E Coyote with the "yikes" sign) because it woudn't restore to a previous version.

I was having the same battery drain issues with the iPhone 5s. I installed the ios9 beta from a restore but noticed something was a little odd from the usual beta installs.

Results from install on iPhone: iPhone ios9 beta install went smoothly but battery usage was ridiculous. I've tried the turn off/on again, hard reset, etc. and still it was going do battery life like crazy. I figured it was doing it's indexing so I just left it plugged in overnight. I did run my iHome alarm app at night though. In the morning, I noticed that it was only at 80% charge after being plugged in all night! Killed the alarm app and topped off the phone before I left the house in the morning. By the afternoon, my battery was down to 30% after light usage and down 10% after sitting idle no apps running, etc. I am downgrading back to 8.3 since my development phone is my main phone. Downgrade is going smoothly.

Results from install on iPad mini (original): Restored ios9. Restored from my settings. I had several reboots (or crashes) during sync of apps on my iPad Mini. At one point, it appeared like my iPad was bricked showing only the Apple logo for a bit. Did several hard resets and it did not help. It would sit at the logo for at least 30 minutes! I put it in DFU mode and plugged it back into iTunes. For some reason it snapped out of its zombie state and finished syncing. Charged it up to 100% overnight and unplugged it in the morning. I did not use it all day until I got home and only for a little bit (Maybe 20 minutes total). Battery usage stats not showing but Facebook and Safari used 33% and 23% of the battery in the last 23 hours. The battery usage seems to be real good (84%)

Maybe the battery drainage issue is just isolated to the iPhones firmware and not affecting the other iDevices. Anyone else try this?

I've disabled all background app refreshes and the problem seems to have gone away. Please, someone, try this as well and see what happens. I've been surfing on battery for 20 minutes and it still is at 100%.

Also, I'm on 28 hours on this build. Don't know if the system need settling or not. (iPhone 6/64)

I had background refreshes disabled in 8.3 before I upgraded to 9 so it carried over when I did the restore. I didn't try enabling background refreshes and then disabling.

Yes. Same to my iPhone 6 + last night. Battery life drains from 100% to 70% around 6 hours....

Moreover, I cannot login citibank website either with safari or citibank app

Same on my side,
it is awsome that a beta version is as worse as this IOS9 Beta 1. With only less improvements the battery is empty in extremely shorten time. But battery is one of the important things at MOBILE phones. So I really do not know why Apple was doing this Beta 1 because it is much more a pre-Alpha. Same at OSX 10.11 with Mail. It crashes totally against Exchange accounts. Really worse. I think they are not ready and / or WWDC was too early. Hopefully we get an update during the next 2 weeks, otherwise I think battery is damadged.

After a few days on 9, it seems that brattery drainage is getting less worse. Battery usage still doesn't work.

cheers

emiel

Last night i set the iPhone 6 to Airplane Mode instead of DND.
7 hours Airplane Mode -> after wake up still 100% battery.
deaktivated airplane mode and only read the answers here (13 eMails). Battery 95% in less than 10 minutes.

poor battery life depends definitely with network activities together.

only deactivate mobile data has no effect on my phone.

Same here.

Also my iPad Air 2 gets realy hot even if I do simple tasks like Safari webbrowsing or using the facebook app.

Beta 1 - around 3 usally have bad battery life so that is not unexpected. In my experience this year is much worse than I've ever seen. Home screen seems to be the culprit according the usage data so I'm guessing it's spotlight related.

Surprised so many people are needing to downgrade though. If you have installed this you should be a developer and hence spend most of your day next to a computer. Just put your phone in the charger!

With the screen on, in a dock connected to the iMac, the battery is going down, not up. The power drain is greater than the power supplied by the lightning cable.

I've been running the phone in many different modes now, what i could se when I woke up is that there's that spinning icon right beside the operator text in the top whenever I go to the homescreen and it doesn't matter if I'm on mobile data, Wi-Fi etc. as soon as I disable any internet connection it stops, so yeah, it's doing something really heavy in the background. When I look at my phone now that background activity have stopped (without me doing anything) and the battery does not drain as fast, even with mobile data enabled and on 4G.

So Apple most definitely are collecting some data at intervals when connected to the Internet. Next time it happens I'm going to connect it to my Wi-Fi and have a look at what's going on and what packets are beeing sent so one can get a clear understanding into whats going on.

Disabling mobile data and Wi-Fi completely and the phone runs with no battery issues at all, with Wi-Fi enabled it runs better than on mobile data enabled.

So yeah.. all in all.. they must be collecting something in the background while on the home screen.

I like the assumption people make here:

You report your "findings" in a polite manner and :

1) You become a peep who is dloading betas just for the heck of it

2) You are in panic and shoud be more calm..

3) You knew better it's a beta.... (of cours eit is ..this is why i am testing) you should know nnot to install beta (then why do they give it to us??)

4) You only own a device (just cause you are "reporting" issues) why do you have beta on production device? (and who told you this is my production device?)

5) It will be fixed so calm down (well i am sure it will..... do you really belive i expect ios 9 to have this battery life??)

6) My favourite one... why don't you test like everyone does? Plugged in into the computer so nop worries about battery life!!!! (Yeah like MOBILE devices now have to stay plugged all day.... and of course if you have a training app under development.......who does't train with a power plug behind his back??).

Again to all the "haters" please relax..and calm down..We know it is beta, we know it will be fixed and no we are not in panic! we just report findings and sometimes look if the issue might be a device specific issue...after all we are here to test..... oh and we are not all 12 years old playing Angry Birds.. some of us do work in app development.

Have a good day 😉

On topic, i had to revert to iOS 8.3 simply because i cannot live with this battery life (on a testing device) hopefully i 'll be able to test on 9 beta soon.