iGuy

iOS 7 battery instantly drops from 14% to 1%

I've noticed my iPhone 5 battery (on iOS 7) quite often drops from say 14% to 1%. Is that normal?

And then when I plug it in it shoots back to around 8%!

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JanSt / MOD  Oct. 28, 2013 at 14:54

Have you 'calibrated' it since you upgraded to iOS 7?
Let it run to ZERO. Then fully recharge. Then reboot.

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