Xiaomi Redmi Note 8T Fingerprint Sensor Replacement

Introduction

Use this guide to replace a broken fingerprint sensor on your Xiaomi Redmi Note 8T.

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

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Étape 1 Xiaomi Redmi Note 8T Rear Glass Removal

Xiaomi Redmi Note 8T Fingerprint Sensor Replacement, Xiaomi Redmi Note 8T Rear Glass Removal: étape 1, image 1 de 1

Before you begin, switch off your phone.
Apply a heated iOpener to the back of the phone to loosen the adhesive beneath the back cover. Apply the iOpener for at least two minutes.

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Étape 2

Xiaomi Redmi Note 8T Fingerprint Sensor Replacement: étape 2, image 3 de 3

Secure a suction handle to the bottom of the rear glass, as close to the edge as possible.
If the phone's rear glass 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 rear glass with the suction handle to create a small gap between the glass and the frame.
Insert an opening pick into the gap.
If you have trouble, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.
Slide the opening pick to the bottom right corner.

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Étape 3

Insert a second opening pick and slide it to the bottom left corner to cut the adhesive.
Leave the opening picks in place to prevent the adhesive from resealing.
Don't remove the suction handle yet. You're going to use it later in the removal procedure as a rear glass stand.

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Étape 4

Xiaomi Redmi Note 8T Fingerprint Sensor Replacement: étape 4, image 3 de 3

Insert a third opening pick at the bottom left corner.
Slide the tip of the opening pick from the bottom left corner along the side of the phone to cut the adhesive.
Leave the opening pick in its place at the top left corner to prevent the adhesive from resealing.

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Étape 5

If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener to reheat it.
Insert a fourth opening pick under the top left corner of the rear glass.
Slide the opening pick along the top edge of the phone to cut the adhesive.
Leave the opening pick in the top right corner to prevent the adhesive from resealing.

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Étape 6

Do not insert the opening pick deeper than 5 mm to avoid damaging the fingerprint connector.
Insert a fifth opening pick at the top right corner of the phone.
Slide the opening pick along the right side to cut the remaining adhesive.
Do not remove the rear glass all the way yet, the fingerprint cable is still connected to the motherboard.

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Étape 7

Carefully fold the rear glass to the right side of the phone. Use the suction handle as a stand for the rear glass.

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Étape 8

Use a spudger to pry up and disconnect the fingerprint flex cable.
Remove the rear glass.
During reassembly, this is a good point to power on your phone and test all functions before sealing it up. Be sure to power your phone back down completely before you continue working.

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Étape 9 Fingerprint Sensor

Xiaomi Redmi Note 8T Fingerprint Sensor Replacement, Fingerprint Sensor: étape 9, image 1 de 1

Apply a heated iOpener to the back of the phone where the fingerprint reader is located to loosen the adhesive underneath. Apply the iOpener for at least two minutes.

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Étape 10

Xiaomi Redmi Note 8T Fingerprint Sensor Replacement: étape 10, image 3 de 3

Slide an opening pick underneath the edge of the fingerprint reader.
Slide the opening pick around the edge of the fingerprint reader to cut the adhesive underneath.
Use the opening pick to carefully cut the adhesive underneath the fingerprint flex cable.

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Étape 11

Remove the fingerprint reader.

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Conclusion

To reassemble your device, follow these instructions in reverse order. Apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

Secure the rear glass and the fingerprint reader with pre-cut adhesive or double-sided adhesive tape during reassembly.

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

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