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Samsung Galaxy S20 Microphone Repair

Microphone Repair guide for the Samsung Galaxy S20

Moderate
~34 min
18 steps

Before you begin

Tools

  • Precision screwdriver set
  • Plastic opening tools
  • Anti-static wrist strap
  • Tweezers
  • Suction cup
  • Heat gun or iOpener
  • Plastic spudger

Parts / materials

  • Replacement Samsung Galaxy S20 daughterboard with primary microphone
  • Pre-cut rear glass adhesive strip
  • Isopropyl alcohol (99%)

Safety

  • Wear safety glasses to protect your eyes from potential glass splinters.
  • Discharge the phone battery below 25% before disassembly to reduce thermal hazard risks.
  • Do not apply excessive heat above 80°C to avoid damaging internal battery and screen layers.

Overview

# Samsung Galaxy S20 Microphone Repair Repair Guide Action-specific microphone repair walkthrough for the Samsung Galaxy S20. About 34 minutes across 18 steps. This DIY guide walks through microphone repair on the Samsung Galaxy S20 (Galaxy S series phone). Before you open the device, confirm the exact model number on the Samsung settings screen or rear housing so your replacement part matches the Galaxy S20 specifically—not a similar Galaxy S sibling. Most DIY techs finish this Samsung Galaxy S20 microphone repair in about 34 minutes when parts and tools are ready. Difficulty is rated intermediate for this model. Recommended tools for this Samsung Galaxy S20 job: Precision screwdriver set, Plastic opening tools, Anti-static wrist strap, Tweezers, Suction cup, Heat gun or iOpener, Plastic spudger. Parts and supplies: Replacement Samsung Galaxy S20 daughterboard with primary microphone, Pre-cut rear glass adhesive strip, Isopropyl alcohol (99%). Power the Galaxy S20 off completely, remove SIMs/SD cards if present, and work on a clean, well-lit surface with a magnetic mat for screws. If a step feels wrong for your Samsung Galaxy S20, stop and compare the connector layout to the photos in this guide. When you prefer a same-day pro repair in Seattle instead, LML Repair can handle microphone repair for this model with tested parts and a workmanship warranty.

Step-by-step

  1. 1

    Power off the phone

    1 min

    Press and hold the Power and Volume Down buttons, then tap Power Off on the screen. Ensure the device is completely powered down before proceeding.

  2. 2

    Heat the rear cover

    2 min

    Apply a heat gun or iOpener to the bottom edge of the back glass for two minutes. This softens the adhesive securing the back cover.

  3. 3

    Apply a suction cup

    1 min

    Press a suction cup firmly onto the lower portion of the rear glass near the charging port. Pull up gently to create a thin gap between the glass and the frame.

  4. 4

    Insert an opening pick

    1 min

    Insert a thin plastic opening pick into the gap created by the suction cup. Do not insert the pick more than 5 mm to avoid damaging internal ribbons.

  5. 5

    Slice the perimeter adhesive

    4 min

    Slide the pick around all four edges of the phone to cut through the remaining adhesive. Reapply heat if the adhesive becomes resistant.

  6. 6

    Remove the rear glass

    1 min

    Carefully lift the rear glass panel away from the chassis. Set the back glass aside on a clean work surface.

  7. 7

    Unscrew the wireless charging coil

    2 min

    Use a precision Phillips #00 screwdriver to remove the five screws securing the upper antenna and wireless charging coil assembly.

  8. 8

    Remove the wireless charging assembly

    2 min

    Pry up the edges of the wireless charging pad using a spudger. Peel the pad and attached NFC assembly off the motherboard and battery.

  9. 9

    Disconnect the battery

    1 min

    Use the flat end of a plastic spudger to pry the battery press connector straight up from its motherboard socket. This cuts power to the device.

  10. 10

    Unscrew the loudspeaker

    2 min

    Remove the five Phillips #00 screws holding the loudspeaker module in place at the bottom of the phone frame.

  11. 11

    Remove the loudspeaker

    1 min

    Insert a spudger under the top edge of the loudspeaker housing and pry upward to remove the module, exposing the primary microphone daughterboard.

  12. 12

    Disconnect flex cables

    2 min

    Use a plastic opening tool to disconnect the display flex cable and the main interconnect cable press connectors from the daughterboard.

  13. 13

    Remove the daughterboard screw

    1 min

    Unscrew the single Phillips #00 screw securing the daughterboard assembly to the bottom of the enclosure.

  14. 14

    Remove the microphone daughterboard

    2 min

    Use tweezers to carefully lift the daughterboard containing the primary microphone out of the frame recess.

  15. 15

    Insert the new microphone daughterboard

    2 min

    Place the replacement daughterboard into the bottom chassis recess and gently press it flush into position.

  16. 16

    Reconnect the flex cables

    2 min

    Align and press down on the main interconnect and display flex connectors until they snap firmly onto the new daughterboard.

  17. 17

    Reinstall speaker and wireless coil

    4 min

    Reconnect the battery, snap the loudspeaker and wireless coil back into position, and reinstall all ten Phillips #00 screws.

  18. 18

    Secure rear glass with new adhesive

    3 min

    Apply custom cut adhesive strips to the inner frame, align the rear glass cover, and press firmly along the perimeter to seal.

After your Samsung Galaxy S20 microphone repair

Power the Galaxy S20 back on and test the microphone 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 S20 job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.

Keep learning

Explore more Samsung Galaxy S20 repair context in the encyclopedia, or open related DIY guides.

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