Any body facing battery drainage on ios 9.3.1

Discussion in 'iOS 9' started by Sunny1990, Apr 21, 2016.

  1. Sunny1990 Suspended

    Sunny1990

    Joined:
    Feb 13, 2015
    #1
    Is any body facing battery drainage on ios 9.3.1. My battery life on iPhone 6s plus is terrible after updating to ios 9.3.1
     
  2. masands macrumors regular

    Joined:
    Sep 17, 2010
    #2
    Yep. It's a "known" issue. There is a huge thread on Reddit about it. My iPhone 6S Plus has gone from around 12-13 hours of usage to about 8-9 hrs.
     
  3. kingston73 macrumors 6502

    Joined:
    Dec 23, 2015
  4. JT2002TJ macrumors 6502a

    Joined:
    Nov 7, 2013
    #4
    Me too 6+, used to end my day with about 43%, now I end it <20%. This is everyday.
     
  5. kingston73 macrumors 6502

    Joined:
    Dec 23, 2015
    #5
    I've noticed it most in my overnight time . Before the update I would lose a few percent at most, after update I've been losing up to 25% in 8 or 9 hours
     
  6. dsh3 macrumors 6502

    dsh3

    Joined:
    Apr 30, 2012
    Location:
    Denmark
    #6
    Yep, on my 6S Plus.

    Usage (including apps installed) hasn't changed. The phone now gets very hot from very little use, and the battery drains verity fast compared to previous iOS versions. I have tried hard resetting without any luck.
     
  7. Sunny1990 thread starter Suspended

    Sunny1990

    Joined:
    Feb 13, 2015
    #7
    Same exactly problem . How is battery life after hard reset?
     
  8. macfacts macrumors 68000

    macfacts

    Joined:
    Oct 7, 2012
    Location:
    Cybertron
    #8
    Look in the battery stats to I'd the app that is draining the battery. Look for apps that have low 'background+screen on time' usage but have high battery usage.
     
  9. joe-h2o macrumors 6502a

    Joined:
    Jun 24, 2012
    #9
    This doesn't always help. I was facing this issue with 9.3.1 on my SE and the battery would drain so quickly that the list would never populate before I had to charge it up, so I assume it's a system service or something.

    I reverted to 9.3 and my battery life returned to normal.
     
  10. dsh3 macrumors 6502

    dsh3

    Joined:
    Apr 30, 2012
    Location:
    Denmark
    #10
    Very little change if anything today.
     
  11. flyinmac macrumors 68030

    flyinmac

    Joined:
    Sep 2, 2006
    Location:
    United States
    #11
    That is strange. The battery life on my iPhone 5 has been unaffected by 9.3.1.

    Mine still easily lasts a full day with heavy usage. If I use it frequently all day, web browsing, Facebook, texting, calling, etc. then I still have typically 50% left after a 12 hour day.

    If I use it less frequently, like just a couple text messages, it'll still typically have at least 90% charge or more at the end of the day.

    I did have the old battery replaced about 3 or 4 months ago. Its original battery finally gave out. That battery had to be charged 3 to 4 times a day. It failed Apple's test giving them the worst score they'd ever seen (according to them).

    Been pleased with battery life since then.
     
  12. stevemiller macrumors 65832

    Joined:
    Oct 27, 2008
    #12
    My problem is that I can never get a clear indication of how much real usage I've gotten. Either the usage meter breaks and stops showing anything, or it shows something ridiculous because of background processes that get stuck and report constant usage.

    15h sounds great until you see that it's drained 2/3rds of an iPads battery in 1 day with maybe 6h of "actual" screen on time.

    image.jpeg
     
  13. Armen macrumors 604

    Armen

    Joined:
    Apr 30, 2013
    Location:
    127.0.0.1
    #13
    My 6+ is getting around 10-12 hours. I'm content.
     
  14. robnbill macrumors member

    Joined:
    Jul 5, 2007
    Location:
    Northern VA - Fairfax Area
    #14
    Let me tell you what happened on my iPhone - more or less chronologically - maybe it will help you or someone else:
    • I noticed my Watch draining battery very fast - not anywhere near normal. I scheduled an appt. at the genius bar. They did a number of things - tested the battery, restored the watch, re-paired it, etc. At the same time we both noticed that the iPhone battery was draining very quickly too - that issue comes a little later. After three hours I went home - they kept the ticket open.
    • Now I started concentrating on trying to find the problem with the iPhone battery drain. My usage and standby times were running very close together - that - for me - is not at all normal. I could not find any app that seemed to be in a runaway state.
    • Next - I used Instruments from Xcode - plugged the iPhone into the Mac and monitored activity. There was no app consuming much CPU time over the test periods. There was a system task that performs indexing - some photo task too - that - since the phone was plugged in and locked uses more cycles - that’s OK.
    • What I did find was a system task called “identityservices” that was consuming inordinate amounts of CPU time — e.g., over one eight hour period it consumed 5 hours of CPU time. I assume that was the culprit. What further boosted my suspicions is that iOS itself was creating, occasionally, exception reports on identityserices. In each of those reports it always pointed to a thread that has something to do with Messages. I couldn’t figure out why. Those diagnostic reports start with Exc_ - and have indetityservices in the title.
    • To make things even stranger - a second pair - Phone/Watch - on the same apple ID was having the same exact issues. And, our main Mac, was throwing about 5 identityservices messages/second into the console log - always addressing something to do with messages.
    • Next - we turned off each IOS and OS X device. We the rebooted the devices one-by-one - and all was well - for less than a day.
    • Finally - talked to a Sr. Apple advisor - we agreed - since I had reset all settings on the phone - it might be best to restore the phone via iTunes. I really didn’t want to exercise the nuclear option - but, I agreed to do it to see what happens.
    • A few hours later - I set the phone into restore mode (the USB plug appears on the screen) and plug into the Mac. In iTunes I select the restore option. The phone comes up with the Hola screen - I swipe - select English - then, it comes up the “Activate iPhone” screen. So I type in my Apple ID and password. It will not activate! I tried repeatedly.
    • Called Apple - got hooked up with a Sr. advisor - I give him access to the Mac - so he could see the screen on the phone. Immediately he notices what I did not. It wants an Apple ID of: T*****@yahoo.com. I didn’t notice that in the prompt. He asked all the usual questions - do you know anyone with that Apple ID, etc. No I did not - and I bought the phone on 9/25 from an Apple store - new - and it hasn’t been in anyone else’s hands. He transfers me to another Apple Sr. advisor.
    • I get on the phone with this advisor — she goes over what happened - and I send her proof-of-purchase. She said she is giving the info to a special team that will deactivate the lock. She said it could take up to 7 days to process.
    • FWIW - at all times the Apple advisors were trying to help - they were professional, helpful, and sympathetic.
    • On Wed night around 9 PM the case was sent to the unlock team. The advisor said she would follow up with me on Sunday. Clock is ticking.
    • While the clock was ticking I researched the issue of Activation Lock - a number of users reported this issue - under iOS 8 and 9. Some had bought their phone from someone - it could have been left in a locked state. However, I did find a number of cases that were identical to mine - and in each of those that I found — they all were asked for an Apple ID that ended in @yahoo.com.
    • Now it’s Friday around 3 PM - I get the message that my phone was unlocked! Less than two full days - I actually think that’s reasonable. I restored the phone as a new device. I then proceeded to download the apps I wanted from the app store - and set up iCloud, Photos, etc. I left it plugged in overnight so it could complete the download of the Photos database.
    • Today - Sat - I unplugged it around 8 AM - its’ now 5 PM. During the day I spent a fair amount of time setting up apps - login ID’s, notifications, etc. They battery % - FWIW- is at 79%. I think that’s excellent. I’ll re-pair the watch tomorrow and see if there is any change.
    • Conclusion - this is mine - not Apple’s: The unknown email (T*****@yahoo.com) that was attached to my iPhone/IMEI number is what caused the issue with the Messages queue and what I believe to be the associated CPU usage by identityservices. The result was extreme battery drain - on the phone and the watch since they are in a symbiotic relationship - it too runs identityservices.
    • All seems excellent right - now including all of our other iOS and OS X devices.
    • My concern - and what will likely remain a mystery to me - how did a foreign ID ever get attached to my iPhone. There was only one ID attached to it when it was set up - and that is mine.
    Hope this helps someone.
     
  15. newellj macrumors 601

    Joined:
    Oct 15, 2014
    Location:
    Boston, MA, US
    #15
    I think it's a 6S/6S+ thing. I have two iPhone 6 sets that are the same except for iOS versions. The one on 8.4.1 gets the same battery life as the one on 9.3.1.

     
  16. AddisonIII macrumors regular

    Joined:
    May 8, 2013
    #16
    My Air 2 has gone from 11+ hrs to about 9hrs 40min on full charge to recharge at just under 10%. Heck I have an old iPad 4 which I still have on iOS 9.0.2 that still gets over 12hrs per charge. I hope this gets fixed soon
     
  17. Zimba4real macrumors newbie

    Joined:
    Aug 7, 2012
    #17
    I have the same problem with the 5S and 9.3.1 with very little usage - especially the phone getting hot part. Safari is using almost 60% of battery. Very new and very frustrating! Only App with backgd process is WhatsApp and usage is minimal.
     
  18. Sunny1990 thread starter Suspended

    Sunny1990

    Joined:
    Feb 13, 2015
    #18
    image.png
    Exact same problem though safari using 83%:mad:
     
  19. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #19
    Is Safari actually being used a lot, or very little?
     
  20. Zimba4real macrumors newbie

    Joined:
    Aug 7, 2012
    #20
    In my case very very little. I'm in the office, so no need to use the phone except for mesages, so I understand the WhatsApp usage - not Safari. Safari = 26 mins on screen - 59%
     
  21. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #21
    That is quite odd then. Do you have Safari enabled in iCloud settings?
     
  22. Zimba4real macrumors newbie

    Joined:
    Aug 7, 2012
    #22
    It isn't.
     
  23. niji macrumors 6502a

    niji

    Joined:
    Feb 9, 2003
    Location:
    tokyo
    #23
    i have found that if i use apples News app the battery drops about 1% every 3 or 4 minutes.
     
  24. C DM macrumors Westmere

    Joined:
    Oct 17, 2011
    #24
    Do you have various tabs open in Safari? Perhaps might be worth closing them to see if that might make a difference. Perhaps even clearing Safari's data.
    --- Post Merged, Apr 27, 2016 ---
    If you see using an app actively a percentage drop in that time period wouldn't really be that unusual.
     
  25. Sunny1990 thread starter Suspended

    Sunny1990

    Joined:
    Feb 13, 2015
    #25
    I barely use safari.my daily usease is mail,whatsapp,calling.i use my another phone for surfing
     

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