Q: Battery problem after update to IOS 9.3.1

phone is in airplane mode and there is some kind of process com.apple.dt.ins which takes 10% of cpu

CJ -- I don't know.  I assume you waited until iTunes first recognized your device then started Xcode.  It sometimes takes a minute or so to get recognized.

Assuming you looked here for the ExcResource report:  Settings | Privacy | Diagnostics & Usage | Diagnostics & Usage Data.

Since you just tried these changes - maybe you should give it a little more time to make sure you are still having substantial battery drain - maybe it is fixed.

And I would try what Garretn offered.  He was having usage and standby close together - as was I - and what he did worked for him.  It seems you need something to disrupt the system task from looping - disrupting the queue in some mysterious fashion.  In MY case I have that option turned on with no ill effects.

Please let us know what you find out.

UPDATE:  Just saw your screenshots - that is not an issue - the 10% - that's actually the instrumentation task running. You are looking for wild swings - 50-7-100+%.

I'd take your phone out of airplane mode and monitor the tasks - it probably doesn't run if it can't get to the cloud.

Please check link below dont know why images are hidden

Anything suspicious ?

Phone is no longer in airplane mode, wifi turned on , low battery mode is off (normal use)

No, I don't see anything odd.  Do one thing - and your screen shot may already show this -- Lock your iPhone and let the monitor run for say three minutes.  If you don't have any task running on high cpu -- again 50-70-100+ - then your battery drain - IMO - is something else.  Was your screenshot when the phone was locked??

I'm just guessing that you did the typical checking for ensuring there is no Location Services that is always on. 

Phone was locked. Is there any option to monitor same processes but without being connected to mac ?

Not that I am aware of - Apple may have a tool that just runs on the IPhone stand-alone - as a user I don't.  One of the other symptoms is high data usage.  On wifi you are not going to see it - you would when on cell data.  Since you don't seem to have a system task running wild - it must be something else. 

There is an app that will show data usage when on wifi and cell: DataMan Next - the simplest app to track your data usage by Johnny Ixe https://appsto.re/us/0m-vJ.i

That might help you see if data is being consumed "abnormally."

thank you for your help

You're welcome.  One final thought - if you do not have a system or app task running "wild" - they there is something else consuming battery.  Good luck.  Since you probably have Apple support - call them - see what they can find.  Maybe you actually have a bad battery - if they don't find anything wrong with the battery I'm guessing they do what they dod to me - recommend a ADFU.

And one BTW -- this is insidious with indentityservcies - it may be another iOS or OS X device that has the actual problem.  For us it was happening across multiple devices - 'fixing' one cured the others.  Ogd but true.

Good luck.

I turned off Calls on other devices (see garretn's earlier post) and the phone is now back to normal. Seems odd to me that this would cause such a huge drain on the battery ..... but so far so good.

Thanks to all those who've posted work arounds. Hopefully there will be a fix in 9.3.2.

its probably a faulty U2 IC which actually hold battery charge. It can easily be damaged by using unofficial charging cables, car chargers or power banks. It can be replaced but need some one professional my on cost around 100 $, I have 9.3.1 iPhone 6 ehich  to business

HI All - Today I have updated from iOS 9.3.1 to iOS 9.3.2 hoping that battery issues caused due to iOS 9.3.1 will be fixed ... But again crap - even after installing the iOS 9.3.2 - battery is draining as usual as fix is not implemented in this release . Within 3 hours 50% battery died...     :(

  please Apple guys help me with the resolution - as my battery is draining too fast and loosing the battery life ... I hate it - hopefully I need to shift to android ...

I don't know if you have tried the following but it worked for me..  No battery issues after these changes were made.

Settings>Phone>Calls on Other Devices>Allow calls on

Turned off Make calls on Mac.  I was able to leave the other IPhone on and no drain detected.

I can't answer your battery issue, but on the note of the Touch ID, did you ever have your phone serviced through a non-apple service? Specifically, your screen? When this is done, and an update is run on your phone or a restore is done, the system goes through a verification checklist and identifies problematic hardware. At this point, it recognizes the Touch ID (used for secure data encryption of your fingerprint to authenticate things like access to your phone and websites and credit card use) is not authentic and triggers to shut it off. That being said, in such a scenario, this is expected behavior.

Hi,

After few days i found where was the problem. Before i've noticed i have done 4 full DFU restore. But..... after 5th DFU i was wondering why the touch id setup is skipping. I thought i doesn't make a sense to scan finger when the phone is plugged in, so i decided to unplug after dfu. I couldn' t scan my fingers here is the error "Failed , Unable to complete Touch ID setup.Please go back and try again.". I read lots of forum and find out the same problem

Touch ID Not Working after iOS 9.3 Update

My Touch ID was broken thats why my phone was so warm after i lock the screen. Battery draining was insane (10%/h - in airplane mode, everything off)

I had to take the phone to Apple service.

P.S.

One more thing!!!!! the most important, i never drop the phone, never put into water or any other stupid ideas. Update 9.3.1 broke my touch id and now i have to pay $200 for a repair. *** APPLE ????????

I had the same nasty problem - loss 6-10% battery every hour without any touching on my iPhone SE after iOS update. I tried everything for repair: reset all settings, recovery mode, every possibíle way to repair....

I have WATCH sport edition and I really love them. They can be connect to iPhone with two possilbe ways - bluetooth and Wi-Fi. When i turn off bluetooth on phone, WATCH connect to Wi-Fi and after this battery drain on phone stop. 

Ya, now i can recieve sms, make calls etc.. only, when i am log on wi-fi, but it is still better then lose all batery in half day. I believe that Apple solve this problem.

So i dont know if you use some device connect on bluetooth, but if yes, try turn bluetooth off, reset phone and wait...

Thats all and i hope, that this post help someone.

"sorry for my english"