Samsung Galaxy S20 5G Earpiece speaker & Sensor Flex Replacement Guide

Galaxy S Series, Samsung Galaxy, Galaxy S20 5G3 years ago370 Views

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Samsung Galaxy S20 5G Earpiece speaker & Sensor Flex Replacement Guide

Hi everyone, welcome back to DIYGeardo.

Today, we will show you how to replace the earpiece speaker and sensor flex cable on the Samsung Galaxy S20 5G & 4G mobile phones.

If your Galaxy S20 is **having issues with calls—like no sound in the earpiece, muffled sound, or the sensor not working properly—**replacing the earpiece speaker and sensor flex cable is the best solution. This repair requires careful handling of the logic board and wireless pad, so following each step is important to avoid damage to internal components.

Before starting, make sure you have all the required tools and work on a clean, static-free surface.

Compatibility and Model Numbers

This repair guide based on Samsung Galaxy S20 5G device, but it also compatible with Galaxy S20 4g models too.

Compatible Mode Numbers l SM-G980, SM-G980F, SM-G980F/DS, SM-G981, SM-G981F, SM-G981F/DS, SM-G981B/DS, SM-G981U, SM-G981U1, SM-G981N, SM-G981B, SM-G9810, SM-G981W, SC-51A, SCG01

Repair Time & Difficulty

Estimated Repair Time: 20–40 minutes
Repair Difficulty: Medium

Tools to open Galaxy S20 Series

Mobile phone heating pad or hairdryer/heat gun
Plastic pry tool / card pry
Suction cups
Phillips #00 / #000 screwdriver
Tweezers (for connectors)
B7000 glue or double-sided adhesive (for back cover)
Rubber bands or bonding clips to secure the back cover

How to Find Tools and Parts

Heating pad – https://amzn.to/3H0tHzJ
Portable Heat Gun – https://amzn.to/4mszih1
Clamps https://amzn.to/3GYJT4w
STREBITO 142 Piece Repair Tool Kit https://amzn.to/3UO1jUx
Glue | Adhesive https://amzn.to/46exVxe
Silicone Work Repair Mat https://amzn.to/45Emz5l
Compatible Parts
- Battery https://amzn.to/46cHUmK
- Screen https://amzn.to/461912Y
- Other Parts https://amzn.to/4pOwJIM

Protect Your Galaxy S20 Series Phone (4G & 5G)

Protector For The Screen https://amzn.to/3JPERYP
Best Cases For Your Phone https://amzn.to/45FaQUh

Step-by-Step Earpiece Speaker Replacement Instructions

Step 1: Power Off & SIM Tray Removal
Power off your Galaxy S20 completely. Remove the SIM tray to prevent damage during disassembly.

Step 2: Back Cover Removal
Gently heat around the back cover edges using a heating pad, heat gun, or hairdryer to soften the adhesive. Use a suction cup to create a gap and insert a plastic card or pry tool to cut the adhesive. Carefully lift and remove the back cover.

Step 3: Remove Wireless Charging Pad
Undo the five screws securing the wireless charging pad. Disconnect its connector and remove it to access the logic board.

How to Easily Replace the Galaxy S20 5G Battery

Step 4: Remove Logic Board Frame
Undo the screws securing the logic board frame. Carefully remove the frame to access the logic board and earpiece assembly.

Step 5: Remove Logic Board
Disconnect all connectors from the logic board. Use a plastic pry tool or tweezers to gently lift and remove the logic board from the body.

Step 6: Remove Broken Earpiece Sensor Flex Cable
Locate the broken earpiece speaker and sensor flex cable. Carefully disconnect it from the phone and remove it.

Step 7: Install New Earpiece Sensor Flex Cable
Place the new earpiece speaker and sensor flex cable into position. Ensure it fits snugly and connectors are aligned properly.

Step 8: Reinstall Logic Board
Place the logic board back onto the body, reconnect all previously disconnected connectors, and ensure everything is seated properly.

Step 9: Reinstall Logic Board Frame
Secure the logic board frame with the screws previously removed.

Step 10: Reinstall Wireless Charging Pad
Place the wireless pad back in position, reconnect the connector, and secure the five screws.

Step 11: Back Cover Installation
Ensure the back cover has enough adhesive. If needed, apply B7000 glue or a new double-sided back cover adhesive. Carefully place the back cover and secure it using screen binding clips or rubber bands for proper adhesion.

FAQs

1. Can I replace the earpiece speaker without removing the logic board?
No. The logic board must be removed to safely access and replace the earpiece speaker and sensor flex cable.

2. Will replacing the earpiece speaker affect the microphone or other sensors?
No, as long as the connectors are properly seated, the replacement will not affect other components.

3. How do I know if the new earpiece speaker is working properly?
After reassembly, make a call or use the voice recorder to test the earpiece sound and ensure the sensor flex functions correctly.

4. Can I reuse the original adhesive for the back cover?
It’s not recommended. Using fresh adhesive ensures proper sealing and stability.

5. Does this repair affect water resistance?
Yes. Opening the back cover reduces water resistance, even with new adhesive applied.

6. Can I replace only the sensor flex without the earpiece speaker?
On the Galaxy S20, the earpiece and sensor flex are connected as a single assembly, so it is recommended to replace both together.

Troubleshooting – After The Repair

1. Earpiece sound is still distorted after replacement
Check that the earpiece speaker connector is fully seated and there is no debris in the speaker slot.

2. Proximity sensor or face detection not working
Ensure the sensor flex cable is correctly aligned and connected.

3. Phone does not power on after reassembly
Verify that all connectors, especially the battery and logic board, are securely attached.

4. Back cover does not adhere properly
Apply additional adhesive and use clips or rubber bands for proper curing.

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