Phone · Samsung · Galaxy S21
Samsung Galaxy S21 Speaker Repair
Speaker Repair guide for the Samsung Galaxy S21
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools
- Precision screwdriver set (Phillips #000)
- Spudger tool
- Tweezers
Parts / materials
- Replacement Samsung Galaxy S21 loudspeaker assembly
- Pre-cut rear cover adhesive gasket
- Isopropyl alcohol (99%)
Safety
- Wear eye protection when heating and prying glass components.
- Disconnect the battery before removing or installing internal components.
- Do not overheat the phone to avoid battery swelling or thermal damage.
Overview
Step-by-step
- 1
Power Down the Phone
1 minPress and hold the power and volume down buttons, then select Power Off. Ensure the device is completely powered down before starting.
- 2
Heat Rear Glass Edges
3 minApply heat evenly around the perimeter of the back glass using a heat gun for 2 to 3 minutes to soften the adhesive.
- 3
Attach Suction Cup
1 minPlace a suction cup near the bottom edge of the back glass and pull up gently to create a slight gap.
- 4
Insert Opening Pick
2 minSlide a plastic opening pick into the gap between the rear glass and the metal frame.
- 5
Slice Rear Adhesive
4 minSlide the pick around all four edges of the back cover to cut through the remaining adhesive seal.
- 6
Remove Rear Glass
1 minCarefully lift the rear glass cover off the phone frame and set it aside.
- 7
Unscrew Wireless Charging Coil
2 minUse a Phillips #000 screwdriver to remove the screws securing the upper wireless charging pad and protective cover.
- 8
Unscrew Loudspeaker Module
2 minRemove the six Phillips #000 screws holding the lower speaker module to the phone frame.
- 9
Disconnect Battery Cable
1 minUse a plastic spudger to pry the battery press connector straight up from its motherboard socket.
- 10
Remove Wireless Charging Coil
2 minGently peel up the wireless charging pad and plastic bracket assembly, then remove it from the device.
- 11
Pry Out Loudspeaker Assembly
2 minInsert the flat end of a spudger under the notch on the loudspeaker module and pry it upward out of the frame.
- 12
Position Replacement Loudspeaker
2 minAlign the new loudspeaker module into the lower frame cavity and press down lightly until it sits flush.
- 13
Reconnect Battery Cable
1 minAlign the battery connector over its socket and press firmly until it clicks into place.
- 14
Reinstall Wireless Charging Assembly
2 minSet the wireless charging pad and upper bracket back onto the phone frame, aligning all screw holes.
- 15
Fasten Frame Screws
3 minReinsert and tighten all Phillips #000 screws securing the speaker module and top wireless charging pad.
- 16
Clean Adhesive Surfaces
3 minApply a small amount of isopropyl alcohol to a cloth to remove residual adhesive from the frame and back glass edges.
- 17
Apply New Rear Adhesive
3 minPeel the backing off a pre-cut back cover adhesive gasket and align it onto the rear chassis frame.
- 18
Reseal Back Glass
2 minAlign the rear glass cover over the chassis and press firmly along all edges to seat the adhesive.
After your Samsung Galaxy S21 speaker repair
Power the Galaxy S21 back on and test the speaker 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 S21 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 S21 repair context in the encyclopedia, or open related DIY guides.
