Hey, my iPhone stopped working after falling down. I try to hard reset it but it won’t working. I tried to dfu mode but it’s not working.
I opened up the display and checked for loose connections but everything seems fine.
Battery voltage is 2.7V idk but this seems ok.
Anyone can give me some advises?
I guess theres a fault on the logicboard.
Btw where are the boot pins on the logicboard?
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2.7V is very low for battery voltage. Normal voltage output for most smartphone batteries around 3.7. A fully charged battery could be in excess of 4V.
The Power on Pin for the 13 Pro is here. (it's the second one in of the two narrow pins here if the arrow isn't clear enough). You can use any ground to short it to initiate boot.
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Thanks for your advice!
I figured out the pin out. I tried to supply 3,7V at the Pins of the batterie. Tried to boot up but still nothing not a single thing of life.
Is a batterie needed to bootup or I can unplug it and just use my power supply?
I measured the voltage while charging and it seems normal around 3,5.
You may have some more advises for me to figure out what’s wrong with my phone?
Sounds like you need the help of somewhere that deals with micro soldering. Possible board damage.
Yes, that’s what I guess too. But maybe someone already had a similar error. I guess it’s a cold soldering point due the falling down.
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