Samsung Galaxy S25 Charging Port Replacement

A faulty charging port on your Samsung Galaxy S25 can cause slow charging, loose cable connections, or a complete failure to power up. Replacing the USB-C sub-board is a practical fix that restores full functionality to your device. This guide will walk you through the safe disassembly and replacement process to get your phone working perfectly again.

1. 1

   Heat the back glass

   • Turn off your Samsung Galaxy S25 completely.
   • Apply heat to the back cover using a heat gun or heating pad for a few minutes to soften the waterproof adhesive.
   • Do not overheat the device to avoid damaging the battery.
2. 2

   Slice the adhesive

   • Place a suction cup near the bottom edge of the back glass and pull up gently to create a small gap.
   • Insert a plastic opening pick into the gap and slide it along the perimeter to cut the adhesive.
   • Leave picks in the corners to prevent the glass from resealing.
3. 3

   Remove the back cover

   • Once you have cut the adhesive around the entire perimeter, carefully lift the back cover away from the phone.
   • Clean off any leftover adhesive from the frame and the back cover using isopropyl alcohol.
4. 4

   Remove the wireless charging coil

   • Use a Phillips #00 screwdriver to remove the screws securing the wireless charging coil and NFC antenna assembly.
   • Gently unclip the plastic shield and lift the coil away from the motherboard.
5. 5

   Disconnect the battery

   • Safety is your top priority during any internal repair.
   • Use a plastic spudger to pry up and disconnect the battery flex cable from the motherboard.
   • This prevents accidental short circuits while you work on the charging port.
6. 6

   Remove the lower speaker assembly

   • Unscrew the fasteners holding the bottom loudspeaker and sub-board shield in place.
   • Carefully pry up the speaker module and set it aside to expose the USB-C charging board.
7. 7

   Disconnect the sub-board cables

   • Use your spudger to disconnect the main interconnect flex cable and the display cable from the charging board.
   • Carefully detach the delicate coaxial antenna cables using tweezers.
8. 8

   Extract the old charging port

   • Remove any remaining screws securing the USB-C sub-board to the frame.
   • Lift the old charging port board out of the device using a spudger.
9. 9

   Install the new charging board

   • Place your new Samsung Galaxy S25 charging port board into the housing and secure it with its screws.
   • Reconnect the coaxial antenna cables, the main flex cable, and the display cable.
10. 10

    Reassemble and test

    • Reinstall the lower speaker assembly and reconnect the battery.
    • Temporarily power on the phone to test the new charging port and ensure the microphone works.
11. 11

    Seal the device

    • Power the phone back down and reinstall the wireless charging coil.
    • Apply new waterproof adhesive to the frame and press the back glass firmly into place.
    • Apply steady pressure for an hour to ensure a tight seal.