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 restarting when reaches 70%

Hi, at start sorry for my bad English. I have problem with my phone. I replaced my battery 2 months ago, and everything was fine until now. About a week ago i noticed my phone keeps restarting when battery level reaches ~70%, I'm don't get red battery screen, just apple logo - sometimes it turn on shows about 65% battery and restart again in few seconds, sometimes its just black screen and restart again. It stops when I plug in charger and charge my phone. Anyone help?

Update (03/15/2017)

I replaced next new battery in iPhone service - that won't change anything - Any other ideas?

No I never got it wet.

App that shows battery life shows it has 10% condition and 0V voltage. ;(

Answered! View the answer I have this problem too

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3 Answers

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Replacement batteries suffer from poor quality. Often times, they can be re-packaged old batteries with a new electronics chip (gas gauge) so that it shows 0 charge cycles.

The best way to know if your battery is good or not is to install a software like 3uTools and use it to check the battery condition (not the charge percentage). A good battery should be over 80% and considering your battery is new, it should be over 90%.

So while you think you are buying and installing a "new" battery, it is really just an old one. I recommend batteries from iFixit as they have been the most reliable for me to date.

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Likely could be a problem with the mother board i had an i phone five with the same problem has it ever got wet

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I would download "coconut battery" app and get the status of the battery. Could need another replacement battery. I always recommend trying at least 3 new parts anytime I'm diagnosing a phone because of how likely replacements parts are to fail or not work properly.

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