Xiaomi Redmi Note 8 Fingerprint Reader Replacement
Ensure you have spare adhesives for the rear glass and fingerprint reader before proceeding.
- Start by replacing the broken fingerprint reader
- Have a set of replacement adhesives for the rear glass and fingerprint reader
Step 1 | Heat the rear glass
Prepare an iOpener and apply it to the rear glass for at least two minutes.
Be cautious of overheating as the display and internal battery can be damaged by excessive heat.
- If using a heat source, such as a hair dryer, heat gun, or hot plate, monitor temperature levels to avoid damage.
Step 2 | Insert an opening pick
Secure a suction handle to the rear glass's bottom edge, as close as possible.
- If the rear glass is cracked, try lifting with strong tape or superglue the suction handle in place and let it cure before proceeding.
- Lift the rear glass with the suction handle to create a small gap between the back cover and frame.
In case of trouble creating a gap, apply more heat to soften adhesive further (follow iOpener instructions to avoid overheating).
- Insert an opening pick into the created gap.
- Slide the opening pick to the bottom right corner to slice the adhesive.
- Leave the opening pick in place to prevent resealing of the adhesive.
Step 3 | Slice the adhesive
Insert a second opening pick at the bottom edge.
- Slide it towards the bottom left corner to cut the adhesive.
- Keep the picks in place to avoid re-adhesive formation.
Step 4 | Slice the adhesive
Reheat hardened adhesive with the iOpener for 1-2 minutes.
- Insert a third opening pick at the bottom left corner of your phone.
- Slide the opening pick along the left edge to slice the adhesive.
- Leave the pick in place at the top left corner to keep the adhesive open.
Step 5
Insert the opening pick under the top left corner.
- Slide it along the top edge to cut the adhesive.
- Leave it in place at the top right corner.
Step 6
Do not remove the rear glass completely yet.
- Insert a fifth opening pick under the top right corner of the device.
- Slide the pick along the right edge of the rear glass to cut remaining adhesive.
Step 7 | Open your phone
Be cautious when handling the fingerprint cable to avoid damaging it.
Fold the rear glass to the right, mimicking the motion of opening a book's back cover.
Step 8 | Disconnect the fingerprint reader
Disconnect the fingerprint reader using a spudger, prying the connector straight up from its socket.
- Rear glass assembly: Remove the assembly as a single unit.
Step 9 | Heat the fingerprint reader adhesive
Apply a iOpener to the fingerprint reader on the rear glass assembly for at least one minute to loosen the adhesive.
Be careful not to damage the fingerprint reader or surrounding components with excessive heat.
Step 10
Slide an opening pick underneath the fingerprint reader.
- Use the opening pick to slice the adhesive of the fingerprint reader and pry it up.
- The fingerprint reader cable is held in place by mild adhesive. Use the opening pick to carefully loosen the fingerprint reader cable adhesive.
Step 11 | Remove the fingerprint reader
Risk of damage if fingerprint reader is not properly removed.
- Remove the fingerprint reader.
- Clean areas with isopropyl alcohol (>90% concentration), then apply new adhesive as needed.
- Secure the rear glass using pre-cut adhesive or double-sided tape.
- Apply steady pressure to your phone for several minutes after installing rear glass; a stack of heavy books can aid bonding process.