Phone · Samsung · Galaxy S3 Mini
Samsung Galaxy S3 Mini Microphone Repair
Microphone Repair guide for the Samsung Galaxy S3 Mini
Before you begin
Tools
- Precision Phillips #00 screwdriver
- Plastic spudger
- Plastic opening picks
- Precision tweezers
- Fine-tip soldering iron
- Desoldering braid
- Anti-static wrist strap
Parts / materials
- Replacement SMD microphone module
- Isopropyl alcohol (99%)
- Cotton swabs
- Rosin core solder wire
- Soldering flux pen
Safety
- Wear protective safety glasses when working with hot soldering irons and solder.
- Work in a well-ventilated area to avoid inhaling soldering flux fumes.
- Wear an anti-static wrist strap grounded to a metal object to prevent ESD damage to sensitive components.
Overview
Step-by-step
- 1
Power off the device
1 minPress and hold the Power button until the menu appears, then tap Power Off. Ensure the phone is completely shut down before proceeding.
- 2
Remove the rear cover
1 minInsert a plastic opening tool or fingernail into the notch on the side of the back panel. Gently pry the rear cover off the chassis.
- 3
Extract the battery
1 minInsert your finger into the recess at the bottom of the battery compartment. Lift the battery up and remove it from the phone.
- 4
Remove the SIM and microSD cards
2 minPress the SIM card inward slightly to release it from its slot, then slide it out. Repeat the process for the microSD card if installed.
- 5
Unthread the midframe screws
3 minUse a Phillips #00 screwdriver to remove the ten identical screws securing the rear midframe. Store the screws in a safe place.
- 6
Separate the midframe from the screen
3 minInsert a plastic opening pick between the chrome bezel and the rear midframe. Slide the pick around the perimeter to release the plastic clips.
- 7
Disconnect the display flex cable
2 minLocate the display cable near the top left of the motherboard. Use the flat end of a spudger to gently pry the press connector straight up.
- 8
Disconnect the digitizer flex cable
2 minPry up the digitizer flex cable connector located at the top edge of the motherboard using a plastic spudger.
- 9
Unplug the coaxial antenna cable
2 minUse tweezers or a spudger to pry up the gold coaxial antenna connector near the bottom right corner of the motherboard.
- 10
Remove the motherboard screw
1 minUnscrew the single silver Phillips #00 screw securing the main motherboard to the display frame assembly.
- 11
Pry up the motherboard
2 minCarefully lift the motherboard out of the front housing starting from the top edge. Ensure no connected cables snag during removal.
- 12
Remove the microphone gasket
1 minLocate the small square microphone at the bottom corner of the motherboard. Use tweezers to pull off the black rubber acoustic gasket.
- 13
Clean the microphone opening
2 minDip a cotton swab in high-concentration isopropyl alcohol and clean the tiny hole in the phone frame to remove trapped dust or debris.
- 14
Solder the replacement microphone
10 minApply flux and heat with a fine soldering iron to desolder the old SMD microphone. Clean the pads with wick, then solder the new microphone into place.
After your Samsung Galaxy S3 Mini microphone repair
Power the Galaxy S3 Mini 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 S3 Mini 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 S3 Mini repair context in the encyclopedia, or open related DIY guides.

