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Repair information and guides for the Apple iPhone 5s that was announced on September 10, 2013. Model: A1533, A1453, A1457, A1528, A1530, A1518

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iPhone 5s battery draining very fast

I am working on a 5s that drains battery REALLY fast. I have tried 2 batteries. If I charge it with a wall charger to 100% it will drain within a few hours all the way to 0 without doing anything.

I also had it connected and charging on the computer for a few minutes and it manage to drain down to 0 while it was plugged in!

What could be causing this?

Answer this question I have this problem too

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2 Answers

Most likely U2 IC chip is causing this. Had same problem.

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Any fix available? ??

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Sam will be eternally grateful.
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