iPhone turns off, thinking it has run out of battery

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iPhone turns off, thinking it has run out of battery

From time to time (every second or third day) my iPhone turns off thinking it has run out of battery. This is despite the battery % stating it still has a significant amount of power remaining. I have seen it turn off at 17%, 25% and today 38%. When I try to turn it back on by holding down the on/off butting, the screen displays the out of battery screen, telling me to plug it into a charger. When I plug it into a charger, the phone comes back on, and already has the same amount of charge as it did before it turned off. So in today's case when I plugged it back it, and it powered up, the phone had 38% of battery immediately.

What can I do to fix this so the phone uses all its battery life?

Thanks

iPhone 5, iOS 6.1.4

Posted on Sep 16, 2013 1:00 AM

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Answer 1

AnaMusic

Level 9

57,562 points

Sep 16, 2013 1:03 AM in response to Eml1111

Eml1111 wrote:

What can I do to fix this so the phone uses all its battery life?

For proper reporting of the battery’s state of charge, be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down).

http://www.apple.com/batteries/iphone.html

Eml1111 wrote:

From time to time (every second or third day) my iPhone turns off thinking it has run out of battery.

The Basic Troubleshooting Steps are:

Restart... Reset... Restore from Backup... Restore as New...

Restart / Reset

http://support.apple.com/kb/ht1430

Backing up, Updating and Restoring

http://support.apple.com/kb/HT1414

If you try all these steps and you still have issues... Then a Visit to an Apple Store or AASP (Authorized Apple Service Provider) is the Next Step...

Be sure to make an appointment first...

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