Xiaomi Mi 9T Pro Loudspeaker Replacement
This is a repair guide for replacing the loudspeaker on the Xiaomi Redmi Note 9 Pro.
- You will need replacement adhesive for reassembly.
Step 1 | Heat the rear glass
Never apply excessive heat to avoid damaging the display and internal battery.
- Apply a preheated iOpener to the rear glass for at least two minutes to loosen the adhesive.
- Alternatively, use a hair dryer, heat gun, or hot plate – but be cautious not to overheat the phone.
Step 2 | Insert an opening pick
Secure a suction handle to the bottom edge of the rear glass, as close to the edge as possible.
If the rear glass is cracked, use strong tape or superglue to secure the suction handle in place and allow it to cure.
- Lift the rear glass with the suction handle to create a small gap between the back cover and the frame.
- Apply more heat if necessary to soften the adhesive, but follow iOpener instructions to avoid overheating.
Insert an opening pick into the gap you created.
- Slide the opening pick to the bottom right corner to slice the adhesive.
- Leave the opening pick in place to prevent resealing of the adhesive.
Step 3 | Slice the adhesive
- Place an additional opening pick at the phone's bottom edge.
- Guide the new pick towards the lower left corner to separate the adhesive.
Leave the opening picks inserted to avoid resealing of the adhesive.
Step 4 | Slice the adhesive
Reheat the iOpener for 1-2 minutes to loosen stiff adhesive.
- Insert a third opening pick at the bottom left corner of your phone.
- Slide the opening pick along the left edge, slicing through the adhesive.
- Leave the pick in place in the top left corner to prevent resealing.
Step 5
Insert opening pick at top left corner.
- Slide towards top edge to cut adhesive.
- Leave in top right corner to keep it open.
Step 6
Avoid removing the rear glass completely, as it may still be stuck due to adhesive around the rear camera.
- Insert a fifth opening pick at the top right corner.
- Slide the pick along the right edge of the rear glass to cut remaining adhesive.
Step 7 | Loosen the rear camera adhesive
Insert a plastic spudger or similar tool at the right edge of the phone, near the rear camera.
- (If successful separation occurs)
- Continue to slice along the rear camera frame using the plastic tool.
Step 8 | Remove the rear glass
Remove the rear glass.
- Clean relevant areas with isopropyl alcohol (≥90%), then apply new adhesive as needed.
- Secure the new rear glass with pre-cut adhesive or double-sided tape.
Apply firm pressure to your phone for several minutes after installation, using a stack of heavy books if necessary.
Step 9 | Unfasten the motherboard cover screws
Remove the motherboard cover using a Phillips screwdriver.
- Remove eleven 3.9mm x Phillips screws.
- Also, remove one 2.3mm x Phillips screw.
Step 10 | Pry up the motherboard cover
- Insert the tip of an opening pick underneath the left edge of the motherboard cover.
- Flip the opening pick sideways to pry up the motherboard cover.
Step 11 | Remove the motherboard cover
Remove motherboard cover using tweezers or your fingers.
Step 12 | Disconnect the battery cable
Disconnect the battery connector with a spudger, prying it straight up from the socket.
Step 13 | Unfasten the loudspeaker assembly screws
Remove the eight 3.9 mm long screws using a Phillips screwdriver.
Step 14 | Pry up the loudspeaker assembly
- Insert a credit card or similar tool between the top edge of the loudspeaker assembly and the battery.
- Use the inserted tool to gently pry up the loudspeaker assembly.
Step 15 | Remove the loudspeaker assembly
Remove the loudspeaker assembly.
- Reassemble, applying new adhesive to necessary areas after cleaning with isopropyl alcohol ( > 90% ).