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Das Apple iPhone 5s wurde am 10. September 2013 angekündigt. Die Reparatur dieses Geräts ist ähnlich wie bei den Vorgängermodellen und erfordert Schraubendreher und Hebelwerkzeuge. Verfügbar mit GSM oder CDMA mit 16, 32 oder 64 GB in silber, gold und space grau.

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iPhone 5s loosing 30% battery life overnight!

Hi guys, I have an iPhone 5s here and I’m trying to figure out where the issue lies... it’s loosing around 30% battery life overnight!

Overnight the phone will be left in low power & airplane mode.

  • background app refresh has also been disabled

*auto brightness is off

  • It’s currently running iOS 11.2.6

*Has been restored to factory settings. No iCloud, no apps, pictures ect. Literally a fresh install of iOS

  • multiple new batteries fitted (same result)

im thinking it’s the u2 ic chip that’s failing but I’ve dealt with a few of these before and they will ither drain power much faster than this or shut off randomly (an issue I have not had with this iPhone)

Really stuck! Any help would be greatly apreciated :)

Thanks!

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You guessed right, pretty much the U2 Tristar charging chip is the last thing to rule out.

Though shorted cap(s) on the logic board can also cause this kind of issue which will require some time to measure capacitors for any short to ground with a multi-meter and the metal shields removed, which all require micro soldering to do.

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Does this mean the phone is basically stuffed ?

I have the same problem. Should I just ditch the phone & cut my losses ?

von

Pretty much, there's a short circuit on the board most likely from the U2 Tristar charging IC chip. IMO too expensive these days to fix for a iPhone 5s for what it's worth.

von

A 5s that needs a tristar chip is a great device for microsoldering training---if you decide not to fix it, then we are always on the lookout for great student project phones at iPad Rehab for training microsolderers all over the world. The more folks that learn to do board repair means that next time you'll have someone local who can do a straigthforward board repair like this while you wait.

von

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J W wird auf ewig dankbar sein.
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