Since the current stops at about 240 mA and the phone is frozen on the Apple logo after charging, we can narrow down the fault range to the USB charging circuit. Because the USB IC is at the very front end of the USB charging circuit. Next, we try to replace the USB IC.

Put the motherboard on the 200 °C Heating Platform to heat. Heat the motherboard with 330 °C vertical Hot Air Gun. Pry the logic board with a Pry Bar while heating. When the logic board becomes loose, remove it with tweezers.