Phone · Samsung · Galaxy Z Fold 4 5G
Samsung Galaxy Z Fold 4 5G Charging Port Repair
Charging Port Repair guide for the Samsung Galaxy Z Fold 4 5G
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools
- Precision screwdriver set (Phillips #000)
- Spudger tool
- Tweezers
- Isopropyl alcohol
Parts / materials
- Replacement Galaxy Z Fold 4 charging port daughterboard
- Pre-cut back cover adhesive strips
Safety
- Power off the device completely before performing any disassembly.
- Wear safety glasses when heating and prying glass panels.
- Avoid using metal tools directly on or near the internal lithium-ion batteries.
Overview
Step-by-step
- 1
Eject the SIM card tray
1 minInsert a SIM ejector tool into the pinhole next to the SIM tray on the top side. Remove the tray from the device.
- 2
Heat the rear glass panel
3 minApply heat to the edges of the back cover glass using a heat gun for approximately two minutes to soften the adhesive.
- 3
Attach suction cup to lower rear glass
2 minPress a suction cup firmly onto the lower portion of the rear glass cover. Firmly pull up on the ring to create a slight gap.
- 4
Insert an opening pick
2 minSlide a plastic opening pick into the gap between the rear glass and the metal frame.
- 5
Slice perimeter adhesive
4 minMove the pick along all edges of the glass back cover to slice through the adhesive seal completely.
- 6
Remove the rear glass panel
2 minLift the rear glass cover away from the chassis and place it on a clean surface.
- 7
Unscrew the upper speaker shield
3 minUse a Phillips #000 screwdriver to remove the screws securing the wireless charging coil upper shield.
- 8
Disconnect the wireless charging pad
2 minUse a plastic spudger to detach the press connector for the wireless charging pad from the motherboard.
- 9
Remove the wireless charging coil
2 minCarefully peel up and remove the wireless charging coil assembly from the device.
- 10
Unscrew the lower speaker enclosure
3 minRemove the Phillips screws holding the lower speaker and daughterboard cover in place.
- 11
Remove the lower speaker housing
2 minInsert a spudger under the lower speaker housing and gently pry it out of the phone.
- 12
Disconnect the main interconnect cable
2 minPry up the main flex cable connector linking the charging port sub-board to the main motherboard.
- 13
Disconnect the display interconnect cable
2 minDetach the secondary display flex cable from the sub-board using the flat tip of a spudger.
- 14
Disconnect the antenna coaxial cables
2 minUse precision tweezers to carefully pop off the white and blue antenna coaxial connectors from the sub-board.
- 15
Unscrew the sub-board retaining screw
1 minRemove the single Phillips screw securing the sub-board to the outer housing frame.
- 16
Extract the old charging port sub-board
2 minGently pry up the damaged charging port sub-board using a spudger and lift it out of the chassis.
- 17
Seat the new charging port sub-board
2 minAlign the replacement sub-board into the lower housing recess and press it down flush.
- 18
Secure the sub-board screw
1 minReinstall and tighten the single Phillips screw securing the new sub-board to the frame.
- 19
Reconnect antenna coaxial cables
2 minAlign and snap the coaxial antenna cables onto their mating connectors on the new sub-board.
- 20
Reconnect interconnect flex cables
2 minPress down firmly on the main and display flex connectors until they click into place on the sub-board.
- 21
Reinstall lower speaker housing
3 minPlace the lower speaker assembly back into position and fasten its Phillips screws.
- 22
Reinstall wireless charging coil
3 minAlign the wireless charging assembly, reconnect its motherboard press connector, and secure the frame screws.
- 23
Clean old adhesive from frame
3 minScrape off residual adhesive around the frame using isopropyl alcohol and a lint-free cloth.
- 24
Apply new rear panel adhesive
3 minAlign and stick pre-cut replacement adhesive strips onto the outer frame perimeter.
- 25
Reseal the back cover and insert SIM tray
2 minAlign the glass rear panel onto the frame, press firmly along all edges to seal it, and reinsert the SIM card tray.
After your Samsung Galaxy Z Fold 4 5G charging port repair
Power the Galaxy Z Fold 4 5G back on and test the charging port repair function before you put every screw away. Check touch/display response, charging, cameras, buttons, and wireless as relevant to this repair. If something fails after closing the device, reopen carefully and reseat the connectors for this Samsung Galaxy Z Fold 4 5G job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Prefer a professional repair?
Book Samsung Galaxy Z Fold 4 5G charging port repair at LML Repair in Seattle — same-day options available.

