The charging port is part of a sub-board connected to the mainboard via cable or solder pads.
Fault symptoms include no charging, intermittent charge detection, or loose connection.
Replacement requires removing lower frame and sub-board, then soldering or installing the new unit.
Use OEM or high-quality compatible part to ensure fast charging and safety.
Repair time is around 1–2 hours at a professional smartphone repair shop.
Cost for parts + labor is approximately $16–30 (400k–700k VND).
Post-replacement tests should include charge current, plug/unplug cycles, and fast charge functionality.