Phone · Samsung · Galaxy S7 Edge
Samsung Galaxy S7 Edge Microphone Repair
Microphone Repair guide for the Samsung Galaxy S7 Edge
Before you begin
Tools
- Precision screwdriver set
- Plastic opening tools
- Tweezers
- Heat gun or iOpener
- Suction cup
- Opening picks
- SIM eject tool
Parts / materials
- Replacement Galaxy S7 Edge primary microphone flex cable
- Pre-cut rear glass adhesive tape
- Isopropyl alcohol (99%)
Safety
- Wear safety eye protection when working near heated glass to guard against shatters.
- Disconnect the battery before touching internal components to prevent short circuits.
- Do not overheat the device to avoid damaging the lithium-ion battery or display panel.
Overview
Step-by-step
- 1
Eject the SIM Tray
1 minInsert a SIM eject tool into the hole at the top of the phone to pop out the SIM tray. Remove the SIM and microSD card tray completely.
- 2
Heat the Rear Panel
3 minApply heat to the edges of the rear glass using a heat gun or iOpener for two minutes to soften the internal adhesive. Keep the heat source moving constantly to avoid hot spots.
- 3
Attach Suction Handle
2 minPress a suction cup firmly onto the lower half of the rear glass cover. Pull up gently on the suction handle to create a slight gap between the glass and the aluminum frame.
- 4
Slice Rear Adhesive
4 minInsert an opening pick into the gap near the bottom edge of the glass. Slide the pick slowly along all four edges to cut through the strong adhesive strips.
- 5
Remove the Rear Glass
2 minLift the rear glass cover off the phone frame once all sides are fully separated. Set the panel aside in a safe, dust-free area.
- 6
Unscrew the Midframe
3 minRemove the twelve Phillips #00 screws holding the rear midframe, wireless charging coil, and upper antenna assembly in place. Organize the screws for reassembly.
- 7
Remove Upper Antenna Module
2 minUse the flat end of a plastic spudger to pry up and detach the top antenna cover from the chassis. Lift the module straight out of the phone.
- 8
Remove Wireless Charging Pad
2 minPry up the edges of the wireless charging pad and middle frame assembly using a spudger. Lift the entire module away from the main frame.
- 9
Disconnect the Battery
1 minUse a plastic spudger to pry the battery flex cable straight up from its connector on the motherboard. Disconnecting power prevents shorting out internal circuits.
- 10
Disconnect Display and Sensor Flexes
3 minUnplug the main display cable, soft key ribbon cables, and front camera press connector from the motherboard using a precision spudger.
- 11
Remove Motherboard Retaining Screw
1 minUnscrew the single Phillips #00 screw securing the top portion of the motherboard to the housing. Store this screw separately from the midframe screws.
- 12
Lift Out the Motherboard
3 minGently tilt the top edge of the motherboard upward and clear of the frame. Carefully pull the board up and out, ensuring no flex cables snag during removal.
- 13
Heat Lower Mic Assembly
2 minApply mild heat to the bottom lower edge of the frame for 30 seconds to loosen the adhesive securing the primary microphone flex assembly.
- 14
Remove Old Microphone Flex
3 minUse precision tweezers to lift the primary microphone gasket and delicate ribbon cable from the bottom housing channel. Peel the old assembly out completely.
- 15
Install Replacement Microphone
3 minAlign the new primary microphone flex assembly with the rubber gasket into the bottom housing slot. Press down firmly to stick the adhesive to the frame.
- 16
Reinstall Motherboard
3 minGuide the motherboard back into the phone frame, bottom-first, ensuring all bottom flex cables stay above the board. Fasten the single Phillips #00 retaining screw.
- 17
Reconnect All Flex Cables
4 minPress down on the display flex, sensor ribbon cables, and battery connector until they snap into place. Reattach the wireless charging pad and midframe screws.
- 18
Reseal the Rear Glass
4 minApply a new pre-cut rear adhesive gasket along the frame perimeter. Press the rear glass firmly onto the phone for 30 seconds to lock the seal.
After your Samsung Galaxy S7 Edge microphone repair
Power the Galaxy S7 Edge 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 S7 Edge 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 S7 Edge repair context in the encyclopedia, or open related DIY guides.

