supermehra
Level 1 (4 points)
iPhone

Q: Battery dies suddenly despite reasonable charge

Summary of problem:

 

  • iPhone 6 about 18 months old running iOS 9.3.5 (13G36)
  • I charge it all night after letting it completely discharge.
  • Phone takes 100% charge, but does not last beyond 10 hours with battery dropping dramatically
  • Often, it would show 30%, I launch a heavy app like FB or Evernote and the phone shuts down immediately, demanding a charge before powering back up
  • I have tried hard reset via home + power button
  • I have tried different battery doctor apps
  • I have switched off all apps and disabled location services as well as controlled background apps to be really sure it is not a software issue

 

I believe the issue has exasperated after the last iOS upgrades. Is it just that the battery is now too old, which I am disinclined to believe since my charging habits are very good!

 

Anyone have a similar issue or suggestions on what to do short of replacing the battery?

iPhone 6, iOS 9.3.5

Posted on Sep 9, 2016 9:26 PM

Close
supermehra

Q: Battery dies suddenly despite reasonable charge

  • All replies
  • Helpful answers

  • by ChrisJ4203,

    ChrisJ4203 ChrisJ4203 Sep 9, 2016 9:29 PM in response to supermehra
    Level 9 (57,375 points)
    iPhone
    Sep 9, 2016 9:29 PM in response to supermehra

    Make an appointment at the Genius Bar of the nearest Apple Store and they can diagnose the battery, to tell you if there is a battery problem. If not, you will need to troubleshoot the device to determine where the battery is going. That can be traced with Settings>Battery and see what is using the highest percentage of battery over a 24 hour period.

     

    After a reset, the next steps in user troubleshooting are restore from backup, restore to factory; testing after each.

  • by supermehra,

    supermehra supermehra Sep 9, 2016 9:46 PM in response to ChrisJ4203
    Level 1 (4 points)
    iPhone
    Sep 9, 2016 9:46 PM in response to ChrisJ4203

    Battery usage last 24 hours has nothing extraordinary. WhatsApp is the largest consumer at 29% followed by Phone at 23% and everything else is single digit. No unusual activity.

     

    So what you are suggesting as next steps are :

    • Backup phone
    • Hard reset using Home + Power (already done, so proceeding to next step)
    • Factory reset
    • Restore from backup and see how it does over a day

     

    Is that correct?

  • by ChrisJ4203,

    ChrisJ4203 ChrisJ4203 Sep 9, 2016 9:56 PM in response to supermehra
    Level 9 (57,375 points)
    iPhone
    Sep 9, 2016 9:56 PM in response to supermehra

    While you would first backup the device, and since you say you already did a reset, the next step is restore from backup, test. After that, if necessary, restore to factory, test.