The Apple iPhone 5s was announced on September 10, 2013. Repair of this device is similar to the previous models, and requires screwdrivers and prying tools. Available as GSM or CDMA / 16, 32, or 64 GB / Silver, Gold, and Space Gray.

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Phone dies at 20%

I recently got a used iPhone 5s from my aunt. It is running iOS 9.2.1 and everything works fine exept for the fact that the phone will die with 27%, 25%, or 20%. When I plug it back in to charge the phone turns on again with the same battery percentage as it had when it died. Is this a software or calibration issue or do I need to replace the battery?

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i had same issue with my 2 years old phone, at 30% it will totally shut down, what i did is i replaced the battery, now everything is perfect. i used the ifixit battery replacement kit

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I would try putting the phone in DFU mode and updating/restoring it.

Let the phone die and then charge to full

If it happens again the battery needs replacing

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Vince Parisi will be eternally grateful.
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