Phone · Samsung · Galaxy A22 4G (A225 2021)
Samsung Galaxy A22 4G (A225 2021) Microphone Repair
Microphone Repair guide for the Samsung Galaxy A22 4G (A225 2021)
Before you begin
Tools
- Precision screwdriver set (Phillips #00)
- Plastic prying tools
- Suction cup tool
- Heat gun or hair dryer
- Tweezers
- Spudger tool
- SIM eject tool
Parts / materials
- Replacement sub-board with primary microphone
- Pre-cut back cover adhesive sticker or B-7000 glue
- Isopropyl alcohol (90%+)
- Microfiber cleaning cloth
Safety
- Power off the phone completely before starting the repair.
- Disconnect the battery flex cable before handling internal circuitry to prevent short circuits.
- Do not overheat the plastic back cover to avoid warping or damaging internal parts.
Overview
Step-by-step
- 1
Eject the SIM card tray
1 minInsert a SIM eject tool into the hole on the left edge of the phone and press firmly to pop out the SIM tray.
- 2
Heat the back panel
2 minUse a heat gun or hair dryer to warm the outer edges of the plastic back cover for about two minutes to soften the adhesive.
- 3
Slice the rear adhesive
3 minAttach a suction cup to the lower back cover, pull upward to create a small gap, and slide an opening pick around the perimeter.
- 4
Remove the rear panel
1 minLift the rear plastic panel completely away from the body of the phone and set it aside.
- 5
Unscrew the midframe
4 minUse a Phillips #00 screwdriver to remove all 17 screws securing the plastic inner midframe to the phone frame.
- 6
Detach the midframe bezel
3 minInsert a plastic prying tool between the display assembly and midframe, unclipping the side snaps all the way around.
- 7
Disconnect the battery cable
1 minUse the flat end of a plastic spudger to pry the battery flex cable connector straight up from the motherboard.
- 8
Disconnect the interconnect cable
1 minPry up the main interconnect flex cable connector from the daughterboard at the bottom of the device.
- 9
Disconnect the display flex cable
1 minUse a spudger to disconnect the display flex cable from the sub-board assembly.
- 10
Unplug the antenna cables
2 minUse tweezers to carefully pry up the blue and white coaxial antenna connectors from the sub-board.
- 11
Remove the sub-board screw
1 minRemove the single Phillips #00 screw holding the sub-board inside the lower recess.
- 12
Pry out the damaged sub-board
2 minGently insert a spudger beneath the sub-board housing the primary microphone and lift it out of the chassis.
- 13
Seat the new sub-board
2 minPlace the replacement sub-board into the lower cavity, aligning the primary microphone port with the frame rubber gasket.
- 14
Secure the sub-board screw
1 minReinstall the single Phillips #00 screw to lock the sub-board in place.
- 15
Reconnect the antenna cables
2 minAlign and gently press the blue and white coaxial cable heads onto their sub-board terminals until they snap in.
- 16
Attach interconnect and display cables
2 minPress the display flex connector and main interconnect flex cable back onto the sub-board.
- 17
Reconnect the battery cable
1 minPress the battery connector down onto the motherboard until it clicks securely.
- 18
Reinstall midframe and back panel
5 minSnap the midframe back into place, reinstall all 17 screws, apply new back cover adhesive, and press the back panel down tightly.
After your Samsung Galaxy A22 4G (A225 2021) microphone repair
Power the Galaxy A22 4G (A225 2021) 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 A22 4G (A225 2021) job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Prefer a professional repair?
Book Samsung Galaxy A22 4G (A225 2021) microphone repair at LML Repair in Seattle — same-day options available.
