Chosen Solution
the charging port on my iPhone 5C is faulty. The symptoms is the phone will not switch on or show any signs of life. I opened the phone, lifted the screen and I removed the battery plug. I put a voltmeter across it and this read 0V. I then connected the phone charger and switched it on then put a voltmeter across the pins in the socket that takes the battery plug and this also read 0V. From this I assumed that there is no voltage reaching the battery socket to charge the battery or switch the phone on. and this can only be that the charging port is faulty and needs replacing. have I made the correct assessment? Is there anything else that maybe responsible for the voltage not reaching the battery socket? Phone Charger is in full working order as it charges my iPad and another iPhone.
If there’s 0V in the battery, then the battery is faulty. But, as you said you’re also getting 0V with cable plugged in to the phone. Does the phone not show a Apple logo for a few seconds with cable plugged in and battery unplugged? If not, this is either a faulty charging port, or it’s more than likely Tristar/U2 IC chip damage, this chip is damaged via cheap cables etc. And would require microsoldering. :-)
