Samsung s21 ultra 5G charging board replacement | how to change samsung s21 ultra 5G charging board
How to Replace the Charging Board on Samsung S21 Ultra 5G
Replacing the charging board (also known as the USB-C charging port flex) in the Samsung Galaxy S21 Ultra 5G requires technical skill and the right tools. If you're not comfortable opening your phone, it's best to visit a professional repair center.
Tools Required:
✔ Replacement charging board (compatible with Samsung S21 Ultra 5G)
✔ Precision screwdriver set (Phillips and Torx)
✔ Plastic pry tool or guitar pick
✔ Suction cup
✔ Heat gun or hairdryer
✔ Tweezers
✔ Adhesive glue/tape (for reassembly)
✔ Isopropyl alcohol & microfiber cloth (for cleaning)
Step-by-Step Guide
1. Power Off Your Device
Turn off your Samsung S21 Ultra 5G completely.
Remove the SIM tray using a SIM ejector tool.
2. Remove the Back Panel
Heat the edges of the back panel using a heat gun or hairdryer (60-80°C for about 2-3 minutes).
Use a suction cup to lift the back panel slightly.
Insert a plastic pry tool and gently slide it around the edges to loosen the adhesive.
Slowly detach the back cover, taking care not to damage the wireless charging coil.
3. Remove the Wireless Charging Coil & Battery Connector
Unscrew the plastic cover that holds the wireless charging coil and battery connector in place.
Disconnect the battery flex cable to prevent electrical damage.
4. Remove the Speaker & Lower Plastic Cover
Unscrew the bottom plastic cover that houses the speaker and charging port.
Use tweezers to lift and remove the plastic cover.
5. Disconnect & Remove the Charging Board
Disconnect the charging port flex cable from the motherboard.
Unscrew the charging board if necessary.
Carefully lift the charging board from its position.
6. Install the New Charging Board
Place the new charging board in the same position.
Reconnect the charging flex cable securely.
Screw the charging board in place (if required).
7. Reassemble the Phone
Reattach the bottom plastic cover & speaker, and screw them back.
Reconnect the battery flex cable.
Reinstall the wireless charging coil and screw the top plastic cover back.
Apply adhesive glue around the edges and press the back panel firmly into place.
8. Final Testing
Power on your phone and test charging.
Check the speaker, microphone, and fast charging to ensure everything works properly.
Additional Tips:
✔ Use original parts for better compatibility and performance.
✔ Be gentle while disconnecting flex cables to avoid damage.
✔ If fast charging is not working, check the battery flex connection again.
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