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苹果 iPhone 5s 于2013年9月10日公布。该设备的维修与以前的型号相似，需要螺丝刀和撬棒。可使用GSM或CDMA / 16、32或64 GB。颜色有银色、金色和太空灰。

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iPhone 5s Battery drains fast, motherboard issue

I have an iphone 5S with battery problems, the battery drains fast even if the phone is in rest mode. Ι changed battery but does not seem to work so i think that the problem is in other part of the phone, then i tried to test all the phone parts, i removed the charging port, removed the lcd and and i left the phone for some hours and i saw that in this case the battery drains fast two. About 10% in an hour. I think the problem is in the motherboard, i would appreciate if someone could help me how to check the motherboard and what to do. Thank you so much

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Do you have an external DC PSU that you can power the phone from? If you do you can measure the current draw of the phone.

Also, if you have a Mac, search for a program called "coconut battery" it will help you diagnose whether your battery is in need of replacing.

I have also found that more often than not, when you replace a battery on a 5S, you also have to restore the phone - and no back-ups allowed.

Those are some things to consider before you just dive into the motherboard

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I replaced the U2 ic, i was very carefull i thought i made good job but after this iphone stuck to apple logo. But iam sure i made great job, no other capacitor removed near U2 ic and i lined the chip perfect. Maybe the chip i bought is low quality and does not work. Do you know any site to buy high quality chip?

itunes does not regognize the phone any more

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Also for info the windows version is pretty much called 3UTools.

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@benjamen50 I'm starting to think you have stock in 3uTools ;>).

Kidding or course...I tried so many different tools but I agree that 3uTools is the best.

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