Xiaomi Poco M3 Fingerprint Sensor Replacement Repair Guide

Difficulty

Moderate

Steps

Time Required

                          15 - 30 minutes

Sections

SIM Card Tray
1 step
How To Unclip The Back Cover On The Xiaomi Poco M3
8 steps
How To Remove The Motherboard Cover In Your Xiaomi Poco M3
3 steps
Fingerprint Sensor
3 steps

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Introduction

What you need

Step 1

              SIM Card tray removal

Insert a SIM card eject tool or a paperclip into the small hole in the SIM card tray, located near the top left corner of the Poco M3.
Press firmly to eject the SIM card tray.
Remove the SIM card tray from the phone by pulling it out of the phone assembly.
If the tray holds a SIM card it will fall out easily.
When reinserting the SIM card, make sure it’s in the correct orientation inside the SIM card tray.
A thin rubber gasket around the SIM card tray provides water and dust protection. If this gasket is damaged or missing, replace the gasket or the entire SIM card tray to protect your Poco M3’s internal components.

Insert a SIM card eject tool or a paperclip into the small hole in the SIM card tray, located near the top left corner of the Poco M3.

Press firmly to eject the SIM card tray.

Remove the SIM card tray from the phone by pulling it out of the phone assembly.

If the tray holds a SIM card it will fall out easily.

When reinserting the SIM card, make sure it’s in the correct orientation inside the SIM card tray.

A thin rubber gasket around the SIM card tray provides water and dust protection. If this gasket is damaged or missing, replace the gasket or the entire SIM card tray to protect your Poco M3’s internal components.

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Step 2

              Insert a spudger

Insert a spudger into the charging port at a steep angle.
Do not insert the spudger in a flat angle like you would do with a charging cable to avoid damaging the charging port.
Use the spudger to create a gap between the phone assembly and the back cover by prying the back cover away from the bottom edge of the screen.

Insert a spudger into the charging port at a steep angle.

Do not insert the spudger in a flat angle like you would do with a charging cable to avoid damaging the charging port.

Use the spudger to create a gap between the phone assembly and the back cover by prying the back cover away from the bottom edge of the screen.

Step 3

              Insert an opening pick

Insert an opening pick into the gap between the phone assembly and the back cover.
Remove the spudger.

Insert an opening pick into the gap between the phone assembly and the back cover.

Remove the spudger.

Step 4

              Release the plastic clips

Slide the opening pick to the bottom left corner of the phone to release the plastic clips holding the back cover in place.
Slide the opening pick around the bottom left corner.

Slide the opening pick to the bottom left corner of the phone to release the plastic clips holding the back cover in place.

Slide the opening pick around the bottom left corner.

Step 5

Slide the opening pick along the left edge of the Poco M3 to release the plastic clips.

Slide the opening pick along the left edge of the Poco M3 to release the plastic clips.

Step 6

Slide the opening pick around the top left corner to release the plastic clips.
Slide the opening pick along the top edge of the phone to release the plastic clips holding the back cover in place.

Slide the opening pick around the top left corner to release the plastic clips.

Slide the opening pick along the top edge of the phone to release the plastic clips holding the back cover in place.

Step 7

Slide the opening pick around the top right corner to release the plastic clips.
Leave the opening pick inserted above the volume buttons.
Avoid using your opening pick in the area where the physical buttons are located. There’s a flex cable running to the motherboard which can be easily torn.

Slide the opening pick around the top right corner to release the plastic clips.

Leave the opening pick inserted above the volume buttons.

Avoid using your opening pick in the area where the physical buttons are located. There’s a flex cable running to the motherboard which can be easily torn.

Step 8

Insert another opening pick into the gap at the bottom edge of your phone.
Slide the opening pick around the bottom right corner to release the plastic clips securing the back cover.
Slide the opening pick along the right edge of the phone to release the remaining plastic clips. Stop just below the fingerprint reader.

Insert another opening pick into the gap at the bottom edge of your phone.

Slide the opening pick around the bottom right corner to release the plastic clips securing the back cover.

Slide the opening pick along the right edge of the phone to release the remaining plastic clips. Stop just below the fingerprint reader.

Step 9

Remove the opening picks and flip the phone over.
Open up the phone by swinging the back cover up from the right side, like the front cover of a book.
Avoid tensioning the fingerprint flex cable during this procedure.

Remove the opening picks and flip the phone over.

Open up the phone by swinging the back cover up from the right side, like the front cover of a book.

Avoid tensioning the fingerprint flex cable during this procedure.

Step 10

              Unfasten the screws

Use a Phillips #00 screwdriver to remove the ten 3.9 mm-long screws.

Use a Phillips #00 screwdriver to remove the ten 3.9 mm-long screws.

Step 11

              Pry up the motherboard cover

Slide an opening pick under the bottom right corner of the motherboard cover.
Slide the opening pick along the right edge of the motherboard cover to release the plastic clips holding it in place.
At the top right corner, twist the opening pick countercockwise to pry up the motherboard cover.

Slide an opening pick under the bottom right corner of the motherboard cover.

Slide the opening pick along the right edge of the motherboard cover to release the plastic clips holding it in place.

At the top right corner, twist the opening pick countercockwise to pry up the motherboard cover.

Step 12

              Remove the motherboard cover

Remove the motherboard cover.

Remove the motherboard cover.

Step 13

              Disconnect the fingerprint sensor cable

Use the flat end of a spudger to disconnect the fingerprint sensor cable at the bottom left corner of the motherboard.

Use the flat end of a spudger to disconnect the fingerprint sensor cable at the bottom left corner of the motherboard.

Step 14

              Free the fingerprint sensor

Use tweezers to lift the fingerprint sensor rubber gasket off of the top plastic pin.
Take care to not scratch or yank the fingerprint sensor ribbon cable or pierce the fingerprint senor rubber gasket while removing it.

Use tweezers to lift the fingerprint sensor rubber gasket off of the top plastic pin.

Take care to not scratch or yank the fingerprint sensor ribbon cable or pierce the fingerprint senor rubber gasket while removing it.

Step 15

              Remove the fingerprint sensor

Use tweezers to lift the fingerprint sensor rubber gasket off of the bottom plastic pin.
Remove the fingerprint sensor.

Use tweezers to lift the fingerprint sensor rubber gasket off of the bottom plastic pin.

Remove the fingerprint sensor.

To reassemble your device, follow these instructions 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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Author

                    Dominik Schnabelrauch

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cherrymaemiralles2 - Jun 2, 2022

Where can i buy original fingerprint scanner for poco m3?

Introduction#

What you need#

Team#

Introduction

What you need

Team