Xiaomi Mi 8 Fingerprint Sensor Replacement

Apply iOpener to rear glass, heating it until it becomes flexible.

• Secure iOpener in place for at least 2 minutes.

Secure a suction handle to the lower edge of the rear glass, as close to the edge as possible.

• If the phone's rear glass is cracked, try lifting it with strong tape or superglueing the suction handle in place and allowing it to cure.
• Lift the rear glass with the suction handle to create a gap between the glass and the frame.

If the glass won't budge, apply more heat as instructed with the iOpener to avoid overheating.

• Insert an opening pick into the gap.
• Slide the opening pick to the bottom right corner of the phone.

Insert a second opening pick into the lower left corner of the device.

• Slide the new pick to the bottom left corner to break the adhesive seal.
• Leave both opening picks in place to prevent re-adhesion.

Insert a third opening pick at the bottom left corner.

• Slide the opening pick along the side of the Xiaomi Mi 8, starting from the bottom left corner, to cut the adhesive.

• Be aware of the fingerprint flex cable and only insert the tip of the opening pick to avoid cutting it.

• As the adhesive cools down, it will harden. If necessary, use your iOpener to reheat it.
• Leave the opening pick in the top left corner to prevent the adhesive from resealing.

Insert a pick into the top left corner of the rear glass.

• Slide the pick along the top edge to sever the adhesive.
• Leave the pick in place at the top right corner to hold the adhesive open.

Insert a fifth opening pick at the top right corner of the phone.

• Slide the opening pick along the right edge to cut the remaining adhesive.
• Leave the rear glass attached for now, as the fingerprint flex cable is still connected.

Do not attempt to fully remove the rear glass yet to avoid damaging the motherboard.

Careful not to damage the rear glass — be cautious of sharp edges.

• Lift the rear glass carefully, then fold it to the left side.
• Access the fingerprint flex connector.

Risk of damage if adhesive is not properly removed.

• Disconnect the fingerprint flex cable using a spudger.
• Remove the rear glass.

For reassembly, clean and prepare areas with existing adhesive by:

• Removing remaining adhesive
• Cleaning with isopropyl alcohol and a lint-free cloth

Allow several minutes for adhesive to bond after installing rear glass.

Apply pressure by placing heavy items, such as books, on top of the phone.

Place the iOpener on the rear glass and let it heat up for 2 minutes.

• The iOpener will loosen the adhesive beneath the fingerprint sensor.

Slide an opening pick under the fingerprint flex cable to gently release its mild adhesive from the rear glass.

• Start at one end and carefully work your way along the length of the cable.
• The cable should begin to lift free as it separates from the glass.

Insert an opening pick under the top right corner of the fingerprint sensor.

• Slide the opening pick along the top edge of the fingerprint sensor to cut the adhesive.

Position the opening pick at the center of the sensor.

• Twist the opening pick to the side, prying the sensor upwards.
• Continue until you can obtain a firm grip on the sensor.

Remove the fingerprint sensor.