Phone · Motorola · Moto G45 5G
Motorola Moto G45 5G Microphone Repair
Microphone Repair guide for the Motorola Moto G45 5G
Before you begin
Tools
- Heat gun or iOpener
- Precision Phillips #00 screwdriver
- Plastic opening picks
- Spudger
- Tweezers
- Suction handle
- SIM eject tool
Parts / materials
- Moto G45 5G sub-board with microphone
- Pre-cut back cover adhesive tape
- Isopropyl alcohol (99%)
Safety
- Wear an anti-static wrist strap to prevent electrostatic damage to internal components.
- Do not bend or puncture the battery during disassembly.
- Apply low heat evenly to avoid damaging plastic components or overheating the internal battery.
Overview
Step-by-step
- 1
Power Off the Phone
1 minPress and hold the Power button, then tap Power Off on the screen. Ensure the device is completely powered down before starting.
- 2
Remove SIM Card Tray
1 minInsert a SIM eject tool into the hole next to the SIM tray on the side of the phone. Push firmly to eject the tray and pull it out.
- 3
Heat the Back Panel
3 minApply a heat gun or iOpener around the perimeter of the rear panel for 2 to 3 minutes. This softens the adhesive securing the back cover to the frame.
- 4
Apply Suction Cup
1 minPlace a suction cup onto the lower portion of the back panel. Pull gently upward to create a small gap between the panel and the frame.
- 5
Insert Opening Pick
2 minInsert a thin plastic opening pick into the gap created by the suction cup. Take care not to insert it deeper than 3 millimeters.
- 6
Slice the Back Cover Adhesive
3 minSlide the pick carefully around all four edges of the back panel to cut through the adhesive. Reapply heat if the adhesive becomes tough to slice.
- 7
Remove the Back Cover
1 minLift the rear cover away from the device frame once all adhesive is free. Set the back panel aside in a clean area.
- 8
Unscrew Lower Speaker Cover
2 minUse a Phillips #00 screwdriver to remove the screws holding down the lower speaker assembly shield. Keep track of all removed screws.
- 9
Pry Up Speaker Module
2 minInsert the flat edge of a spudger beneath the speaker module notch. Gently lift and remove the speaker housing from the bottom of the phone.
- 10
Disconnect Interconnect Flex Cable
1 minUse a spudger to pry straight up on the press-fit connector linking the main interconnect flex cable to the sub-board.
- 11
Disconnect Coaxial Antenna Cable
1 minGently pry up the coaxial antenna cable connector from the sub-board using fine tweezers or a spudger.
- 12
Remove Damaged Sub-Board
2 minPry gently beneath the edge of the sub-board with a spudger to release it from the chassis. Lift the sub-board, which houses the primary microphone, out of the phone.
- 13
Transfer Rubber Microphone Seal
1 minCheck the old sub-board for a small rubber microphone gasket. If present, use tweezers to move it onto the microphone port of the new sub-board.
- 14
Insert Replacement Sub-Board
2 minAlign the new sub-board with the bottom compartment of the frame and press it flush into place.
- 15
Connect Antenna Cable
1 minSnap the coaxial antenna cable connector directly onto its socket on the new sub-board until it clicks.
- 16
Connect Interconnect Flex Cable
1 minAlign the interconnect flex cable header over its socket on the sub-board and press down firmly until it snaps into place.
- 17
Reinstall Speaker Module
2 minPlace the speaker assembly back over the sub-board and align it with the screw posts.
- 18
Secure Speaker Screws
2 minReinstall the Phillips screws to secure the speaker module to the lower chassis.
- 19
Reattach Back Cover
3 minApply new adhesive strips along the perimeter frame, align the back panel, and press firmly along the edges to seal the phone.
After your Motorola Moto G45 5G microphone repair
Power the Moto G45 5G 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 Motorola Moto G45 5G job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Motorola Moto G45 5G repair context in the encyclopedia, or open related DIY guides.

