Xiaomi 12 Rear Glass Replacement
Retaining water resistance is not guaranteed after replacement.
- Purchase replacement adhesive for the rear glass.
- Replacing the rear glass requires precise reapplication of adhesive to maintain water resistance, but your device will lose its IP rating.
Step 1 | Loosen the rear glass adhesive
Charged batteries are prone to catching fire if damaged during repair.
- Allow your phone's battery to fully drain before proceeding with repairs.
Unplug all cables and shut down the device completely.
- Apply an iOpener to the rear glass for two minutes to loosen adhesive.
- Alternatively, use a heat source like a hair dryer or heat gun, but avoid overheating the phone.
Be cautious of heat damage to the display and internal battery.
Step 2 | Insert an opening pick
Apply significant force; strong adhesive requires substantial effort.
- Reapply heat and retry if initial attempt fails.
- To aid suction, cover cracked glass with clear packing tape or use superglue to secure suction handle.
Never apply excessive force that may shatter rear glass.
- Attach suction handle to the center of the bottom edge of rear glass.
- Pull up with steady, strong force to create a gap between rear glass and frame.
- Insert opening pick at charging port location.
Step 3 | Slice the bottom edge adhesive
Do not insert the pick deeper than 4 mm.
- Slide the pick to the bottom right corner of the rear glass to cut the adhesive.
- Leave the pick in place to prevent resealing of the adhesive.
Step 4 | Insert a second opening pick
- Insert a second opening pick at the bottom right corner.
- Slide it to the bottom left corner of the rear glass to cut the adhesive.
Leave the pick in place to prevent resealing.
Step 5 | Slice the left edge adhesive
Apply iOpener for 1-2 minutes if adhesive becomes hard to cut.
Alternatively, use a hair dryer or heat gun to reheat it.
- Slide opening pick along left edge of rear glass to slice adhesive.
- Leave pick in top left corner to prevent resealing.
Step 6 | Slice the top edge adhesive
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 slice the adhesive.
- Leave the opening pick in the top right corner to prevent the adhesive from resealing.
Step 7 | Slice the right edge adhesive
Insert a fifth opening pick at the top right corner of the rear glass.
Slide the pick down to the bottom right corner, slicing any remaining adhesive.
Step 8 | Remove the rear glass
Remove the rear glass.
- If still attached, use an opening pick to separate the rear glass from the frame by sliding it around the entire perimeter.
Do not power on your phone until reassembly is complete and all connections are secure — risk of damage due to incorrect installation.
- Power on and test all functions before sealing the device.
- Power down completely before continuing work.
Excessive cleaning can cause damage; use high-concentration isopropyl alcohol (>90%) and a lint-free cloth to clean relevant areas only.
- Secure the rear glass with pre-cut adhesive or double-sided tape after cleaning.
Apply strong, steady pressure for several minutes to aid in adhesive bonding — use a stack of heavy books as an effective weight source.