Xiaomi Redmi Note 9S Loudspeaker Replacement
This repair guide is for replacing the loudspeaker in a Xiaomi Redmi Note 9S. Ensure you have replacement adhesive on hand for reassembly.
Step 1 | Heat the rear glass
Avoid overheating the phone to prevent damage to the display and internal battery.
- Prepare an iOpener or use a hair dryer, heat gun, or hot plate to loosen adhesive underneath the back cover.
- Apply heat for at least two minutes to facilitate removal of the back cover.
Step 2 | Insert an opening pick
Secure a suction handle to the bottom edge of the rear glass.
- If the rear glass is cracked, try lifting it with strong tape or superglue the suction handle in place.
- Lift the rear glass using the suction handle to create a small gap between the back cover and frame.
Be cautious not to overheat the adhesive.
Insert an opening pick into the created gap.
Step 3 | Slice the adhesive
Insert opening pick at bottom right corner and gently slice adhesive.
Do not remove opening pick; leave in place to prevent adhesive reseal.
Step 4 | Slice the adhesive
Insert a second opening pick at the bottom edge.
- Slide it to the bottom left corner to cut the adhesive.
- Leave both picks in place, avoiding resealed adhesive.
Step 5
The adhesive may have cooled down if it becomes hard to cut.
- Reheat the adhesive with an iOpener for one to two minutes.
- Insert a third opening pick at the bottom left corner of your phone.
- Slide this pick along the left edge to slice the adhesive.
- Leave it in place near the top left corner to prevent resealing.
Step 6
Insert a fourth opening pick under the top left corner.
- Slide it along the top edge to slice the adhesive.
- Leave it in place, especially at the top right corner.
Step 7
Insert a fifth opening pick under the top right corner.
- Slide the pick along the right edge of the rear glass, slicing the remaining adhesive.
Step 8 | Remove the rear glass
Remove the rear glass.
- Clean areas with isopropyl alcohol (>90%) and reapply new adhesive as needed.
- Secure the new rear glass using pre-cut adhesive or double-sided adhesive tape.
Apply strong, steady pressure to your phone for several minutes after installation to ensure a good bond. A stack of heavy books works well.
Step 9 | Unfasten the motherboard cover screws
Remove the motherboard cover using a Phillips screwdriver.
- There are 11 screws (3.8 mm long) to remove, one of which is hidden under an orange sticker.
Step 10 | Pry up the motherboard cover
Locate the right edge of the motherboard cover.
- Insert the tip of an opening pick underneath.
- Pry the cover up by twisting the opening pick sideways.
Step 11 | Remove the motherboard cover
Remove motherboard cover with your fingers or a tweezer.
Step 12 | Disconnect the battery cable
Disconnect the battery flex cable using a spudger, prying the connector straight up from its socket.
Step 13 | Unfasten the loudspeaker assembly screws
Remove the loudspeaker assembly using a Phillips screwdriver.
- There are seven screws, each measuring 3.8 mm long.
- One of these screws is located under an orange sticker.
Step 14 | Pry up the loudspeaker assembly
Insert an opening pick into the gap between the right edge of the loudspeaker assembly and the frame.
- Twist the opening pick sideways to pry up the loudspeaker assembly.
Step 15 | Remove the loudspeaker assembly
Remove the loudspeaker assembly using your fingers or a tweezer.
- During reassembly, clean any surfaces with isopropyl alcohol (greater than 90% concentration).
- Apply new adhesive where necessary to the cleaned areas.