Samsung Galaxy S25 Plus Charging Port Replacement
A faulty charging port can cause slow charging, intermittent connections, or complete failure to recognize your charger. Replacing the USB-C sub-board on your Samsung Galaxy S25 Plus is a practical solution when cleaning the port no longer works. This repair requires removing the glass back cover and bottom speaker assembly to access the charging board. Proceed with patience and care to avoid damaging the delicate flex cables or the battery.
Required Tools
- Heat gun or heating pad
- Suction cup handle
- Plastic opening picks
- Nylon spudger
- Phillips #00 precision screwdriver
- Precision tweezers
- Isopropyl alcohol (90% concentration or higher)
- Replacement adhesive for the back cover
- Replacement Samsung Galaxy S25 Plus charging port sub-board
Step by step
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Step 1: Drain the battery
Before beginning any internal repairs, discharge your phone battery below 25 percent.
A charged lithium-ion battery can catch fire or explode if accidentally punctured during the repair.
Power off your device completely before moving to the next step.
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Step 2: Heat the back cover
Apply heat to the edges of the back glass using a heat gun or heating pad to soften the adhesive.
Keep the heat gun moving constantly to avoid burning the internal components or melting the glass coating.
The phone should be warm to the touch but not too hot to handle.
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Step 3: Slice the adhesive
Apply a suction cup to the bottom edge of the back glass and pull up gently to create a slight gap.
Insert a plastic opening pick into the gap and slide it around the perimeter to cut the adhesive.
Leave picks in the corners to prevent the adhesive from resealing as you work your way around the device.
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Step 4: Remove the back cover
Once all the adhesive is sliced, carefully lift the back cover away from the phone chassis.
Set the glass aside in a safe location where it will not be scratched or broken.
Clean any leftover adhesive residue from the frame using isopropyl alcohol and a plastic scraper.
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Step 5: Remove the wireless charging coil
Unscrew the Phillips #00 screws securing the wireless charging coil and NFC antenna assembly.
Gently unclip the plastic bracket using a spudger and lift the coil away from the motherboard.
This exposes the battery connector and the upper portion of the main flex cables.
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Step 6: Disconnect the battery
Always disconnect the battery first to prevent short circuits while working on the device.
Use a plastic spudger to pry the battery connector straight up from its socket on the motherboard.
Bend the flex cable slightly out of the way so it does not accidentally make contact with the board.
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Step 7: Remove the bottom speaker
Remove the Phillips #00 screws holding the bottom speaker assembly in place over the charging port.
Pry up the speaker module with a spudger and lift it out of the phone.
This will give you full access to the charging port sub-board and its connecting cables.
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Step 8: Disconnect the flex cables
Use your spudger to disconnect the main display and interconnect flex cables attached to the charging board.
Carefully detach the cellular antenna cables using precision tweezers.
Grip the metal connectors rather than the wires to avoid tearing the delicate antenna lines.
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Step 9: Extract the old charging board
Remove the final screws securing the charging port sub-board to the aluminum frame.
Insert a spudger under the edge of the board and gently pry it upward to release it from any mild adhesive.
Pull the board out of the device and verify that the USB-C port area is clear of debris.
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Step 10: Install the new charging board
Align your replacement charging port sub-board into the bottom of the frame and press it into place.
Secure it with the designated Phillips screws.
Reconnect the antenna cables and snap the main interconnect flex cables back onto their respective sockets.
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Step 11: Reassemble the device
Reinstall the bottom speaker assembly and secure it with its screws.
Reconnect the battery cable, then place the wireless charging coil back into position and screw it down.
Turn on the phone to test the new charging port before sealing the device.
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Step 12: Seal the back cover
Apply new custom-cut adhesive strips to the perimeter of the phone frame.
Press the back glass firmly into place and apply steady pressure around the edges for several minutes.
You can place heavy books on top of the phone to help the adhesive bond properly.
Would you rather leave the repair to the experts?
Disclaimer: repairs are done at your own risk. Devices contain batteries and live components; improper handling can cause injury or fire. For a safe, warrantied repair, contact us.
Frequently asked questions
Yes. The primary microphone is located on the charging port sub-board. Replacing this entire component will usually resolve bottom microphone problems.
Opening the device breaks the factory waterproof seal. You must apply new, high-quality adhesive during reassembly, but you should still keep the phone away from water afterward.
Slow charging can also be caused by a degraded battery, a damaged charging cable, or a faulty power adapter. Verify that you are using a certified Samsung Super Fast Charger and a high-quality USB-C cable.
Micro-soldering a new port is possible but requires advanced skills and specialized equipment. Swapping the entire sub-board is much safer and more reliable for most technicians.