Xiaomi Redmi Note 9 Loudspeaker Replacement Repair Guide

Difficulty

Moderate

Steps

Time Required

                          40 minutes - 1 hour

Sections

SIM Card Tray
1 step
Xiaomi Redmi Note 9 Opening Procedure
10 steps
How to Disconnect the Battery in the Xiaomi Redmi Note 9
1 step
Loudspeaker
2 steps

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Introduction

You’ll need replacement adhesive to reattach components when reassembling the device.

What you need

Step 1

              Eject the SIM card tray

Insert a SIM card eject tool, a SIM eject bit, or a straightened paper clip into the hole on the SIM tray located at the left edge of the phone.
Press directly into the hole to eject the SIM card tray.
Remove the SIM card tray.

Insert a SIM card eject tool, a SIM eject bit, or a straightened paper clip into the hole on the SIM tray located at the left edge of the phone.

Press directly into the hole to eject the SIM card tray.

Remove the SIM card tray.

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Step 2

              Heat the back cover

The back cover of the Redmi Note 9 is held in place by plastic clips and adhesive. It might require some force to release the plastic clips.
Prepare an iOpener and apply it to the back cover for at least two minutes to loosen the adhesive underneath.
A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the display and internal battery are both susceptible to heat damage.

The back cover of the Redmi Note 9 is held in place by plastic clips and adhesive. It might require some force to release the plastic clips.

Prepare an iOpener and apply it to the back cover for at least two minutes to loosen the adhesive underneath.

A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the display and internal battery are both susceptible to heat damage.

Step 3

              Insert an opening pick

Secure a suction handle to the bottom edge of the screen, as close to the edge as possible.
If the screen is cracked, the suction handle may not stick. Try lifting it with strong tape, or superglue the suction handle in place and allow it to cure so you can proceed.
Lift the phone assembly with the suction handle to create a small gap between the assembly and the back cover.
In case you have trouble creating a gap, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.
Insert an opening pick in a steep angle into the gap you created. This might require some force.
Slide the opening pick to the bottom right corner to slice the adhesive and release the plastic clips holding the back cover in place.

Secure a suction handle to the bottom edge of the screen, as close to the edge as possible.

If the screen is cracked, the suction handle may not stick. Try lifting it with strong tape, or superglue the suction handle in place and allow it to cure so you can proceed.

Lift the phone assembly with the suction handle to create a small gap between the assembly and the back cover.

In case you have trouble creating a gap, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.

Insert an opening pick in a steep angle into the gap you created. This might require some force.

Slide the opening pick to the bottom right corner to slice the adhesive and release the plastic clips holding the back cover in place.

Step 4

              Release the plastic clips and slice the adhesive

Insert a second opening pick in a steep angle at the bottom edge of your phone.
Slide the opening pick to the bottom left corner to release the plastic clips and to slice the adhesive.
Leave the opening picks in place to prevent the adhesive from resealing.

Insert a second opening pick in a steep angle at the bottom edge of your phone.

Slide the opening pick to the bottom left corner to release the plastic clips and to slice the adhesive.

Leave the opening picks in place to prevent the adhesive from resealing.

Step 5

              Release the plastic clips and slice the adhesive

If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener to reheat it.
Insert a third opening pick in a steep angle at the bottom left corner of your phone.
Slide the opening pick along the left edge of your phone to release the plastic clips and slice the adhesive.
Leave the opening pick in the top left corner to prevent the adhesive from resealing.

If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener to reheat it.

Insert a third opening pick in a steep angle at the bottom left corner of your phone.

Slide the opening pick along the left edge of your phone to release the plastic clips and slice the adhesive.

Leave the opening pick in the top left corner to prevent the adhesive from resealing.

Step 6

Insert a fourth opening pick in a steep angle at the bottom right corner of your phone.
Slide the opening pick along the right edge of your phone to release the plastic clips and slice the adhesive.
Leave the opening pick in the top right corner to prevent the adhesive from resealing.
Do not try to separate the phone assembly from the back cover all the way yet, the fingerprint cable is still connected to the motherboard.

Insert a fourth opening pick in a steep angle at the bottom right corner of your phone.

Slide the opening pick along the right edge of your phone to release the plastic clips and slice the adhesive.

Leave the opening pick in the top right corner to prevent the adhesive from resealing.

Do not try to separate the phone assembly from the back cover all the way yet, the fingerprint cable is still connected to the motherboard.

Step 7

              Open the phone assembly

Flip your Redmi Note 9 over.
Avoid straining the fingerprint flex cable during the following procedure.
Carefully fold the back cover to the right side of the phone assembly like you would open a book from the back.
Slide the back cover underneath the phone assembly so that the phone assembly overlaps about one third of the back cover and the fingerprint cable is not strained.

Flip your Redmi Note 9 over.

Avoid straining the fingerprint flex cable during the following procedure.

Carefully fold the back cover to the right side of the phone assembly like you would open a book from the back.

Slide the back cover underneath the phone assembly so that the phone assembly overlaps about one third of the back cover and the fingerprint cable is not strained.

Step 8

              Unfasten the motherboard cover screws

Use a Phillips screwdriver to remove the eleven 3.9 mm-long screws securing the motherboard cover.

Use a Phillips screwdriver to remove the eleven 3.9 mm-long screws securing the motherboard cover.

Step 9

              Pry up the motherboard cover

Insert the tip of an opening pick underneath the bottom left edge of the motherboard cover.
Pry up the motherboard cover.

Insert the tip of an opening pick underneath the bottom left edge of the motherboard cover.

Pry up the motherboard cover.

Step 10

              Remove the motherboard cover

Remove the motherboard cover.

Remove the motherboard cover.

Step 11

              Disconnect the fingerprint cable

Use a spudger to disconnect the fingerprint cable by prying the connector straight up from its socket.
Separate the phone assembly from the back cover.

Use a spudger to disconnect the fingerprint cable by prying the connector straight up from its socket.

Separate the phone assembly from the back cover.

Step 12

              Disconnect the battery cable

Use a spudger to disconnect the battery cable by prying the connector straight up from its socket.

Use a spudger to disconnect the battery cable by prying the connector straight up from its socket.

Step 13

              Unfasten the loudspeaker screws

Use a Phillips screwdriver to remove the seven 3.9 mm-long screws securing the loudspeaker assembly.

Use a Phillips screwdriver to remove the seven 3.9 mm-long screws securing the loudspeaker assembly.

Step 14

              Remove the loudspeaker assembly

Remove the loudspeaker assembly.
During reassembly apply new adhesive where it’s necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

Remove the loudspeaker assembly.

During reassembly apply new adhesive where it’s necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

If possible, turn on your device and test your repair before installing new adhesive and resealing.

Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.

To reassemble your device, follow the above steps in reverse order.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

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Introduction#

What you need#

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Introduction

What you need

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