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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Battery replacement but battery life still poor

I ordered and installed a new battery for my 5s--it is certainly better than the old one, but not as good as new, and the phone still shuts off prematurely when battery life is below 20%.

I wiped the phone and didn't restore the backup, reinstalling data and apps, and it didn't help. Is there some power management I need to reset?

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Bad batteries are commonplace, so you could try that since they are inexpensive.

Otherwise, I would worry about U2 damage from non-Apple charger usage. That is a board-level repair you'd need to send your phone out for.

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Not aware of non apple charger use...but anything is possible. Is there a test for that?

Battery was from iFixit.

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