iPhone will not turn on

Hello to all,

Today i got iPhone 5s in the hand! Phone will not turn on, afte i check it on power supply phone has input 0.39mAh, once i press power button. It will stay, not increasing or anything. Next thing was to check previus wokr on phone by other phone repair shops. Besck IME shield was missing and U2 IC. I have put the new U2 chip and phone is still in same condition.

My question is what to look next? I'm looking for someone who has same or similar case to help me! Eventually once i find time and when i get my hand on ZXW dongle i will look for solution.

I have experience with BGA, so if anyone have some guide or solution i will be thankful!


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