Introduction
Use this guide to replace the screen on your Xiaomi 12.
You'll need replacement adhesive for the rear glass and the screen in order to complete this repair.
Retaining water resistance after the repair will depend on how well you reapply the adhesive, but your device will lose its IP (Ingress Protection) rating.
What you need
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Unplug any cables and fully shut down your phone.
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Prepare an iOpener and apply it to the rear glass for two minutes to loosen the adhesive underneath.
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Apply a suction handle to the center of the rear glass's bottom edge, as close to the edge as possible.
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Pull up on the suction handle with strong, steady force to create a gap between the rear glass and frame.
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Insert an opening pick where the charging port is located.
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Slide the opening pick to the bottom right corner of the rear glass to slice its adhesive.
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Leave the opening pick in place to prevent the adhesive from resealing.
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Insert a second opening pick at the bottom right corner and slide it to the bottom left corner of the rear glass to slice the adhesive.
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Leave the opening pick in place to prevent the adhesive from resealing.
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Insert a third opening pick under the bottom left corner of the rear glass.
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Slide the opening pick along the left edge of the rear glass to slice the adhesive.
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Leave the opening pick in the top left corner to prevent the adhesive from resealing.
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Insert a fourth opening pick under the top left corner of the rear glass.
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Slide the opening pick along the top edge of the phone to slice the adhesive.
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Leave the opening pick in the top right corner to prevent the adhesive from resealing.
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Insert a fifth opening pick under the top right corner of the rear glass and slide it to the bottom right corner to slice the remaining adhesive.
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Remove the rear glass.
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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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During reassembly, secure the rear glass with pre-cut adhesive or double-sided tape after cleaning the relevant areas with high-concentration isopropyl alcohol (>90%) and a lint-free cloth.
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After installing the rear glass, apply strong, steady pressure to your phone for several minutes to help the adhesive form a good bond—a stack of heavy books works well.
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Insert an opening pick under the bottom right corner of the charging coil.
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Slide the pick toward the charging port to separate the adhesive.
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Insert a pick under the bottom left corner of the charging coil and separate its adhesive.
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An orange water damage indicator sticker covers a screw on the top edge of the motherboard cover. Pierce through it with your screwdriver or use tweezers to remove it.
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Use a Phillips screwdriver to remove the four 5.4 mm-long screws securing the flash connector cover.
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Use tweezers or your fingers to remove the flash connector cover.
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Use the flat end of a spudger to pry up and disconnect the the flash press connector.
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Use a Phillips screwdriver to remove the seven screws securing the motherboard cover:
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Five 5.4 mm-long black screws
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Two 4.4 mm-long silver screws
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Insert an opening pick under the bottom right corner of the motherboard cover and pry it up.
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Slide the pick up along the right edge of the motherboard cover.
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Twist the pick to release the remaining clips.
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Use the flat end of a spudger to disconnect both battery cables by prying the connectors straight up from their sockets.
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An orange water damage indicator sticker covers a screw on the top edge of the motherboard cover. Pierce through it with your screwdriver or use tweezers to remove it.
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Use a Phillips screwdriver to remove the seven 3.4 mm-long screws securing the loudspeaker.
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Insert the flat end of a spudger under the top edge of the loudspeaker.
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Pry upwards to to release the clips securing it to the frame.
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Use the flat end of a spudger to disconnect the display cable by prying the connector straight up from its socket.
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Prepare an iOpener and apply it to the screen for 5 minutes to loosen the adhesive underneath.
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Apply a suction handle to the center of the screen's top edge, as close to the edge as possible.
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Pull up on the suction handle with strong, steady force to create a gap between the screen and frame.
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Insert an opening pick between the screen and the frame, near the earpiece speaker cutout.
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Slide the pick to the top left corner of the screen to slice its adhesive.
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Leave the pick in place to prevent the adhesive from resealing.
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Insert a third opening pick under the top right corner of the screen.
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Slide the opening pick along the right edge of the screen to slice the adhesive.
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Leave the opening pick in the bottom right corner to prevent the adhesive from resealing.
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Insert a fourth opening pick under the bottom right corner of the screen.
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Slide the opening pick along the bottom edge of the phone to slice the adhesive.
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Leave the opening pick in the bottom left corner to prevent the adhesive from resealing.
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Insert a fifth opening pick under the bottom left corner of the screen and slide it along the left edge of the phone to slice the remaining adhesive.
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Prepare an iOpener and apply it to the screen for 2 minutes to loosen the adhesive.
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Lift the screen off of the frame until it separates from the thicker adhesive patches. Don‘t try to separate the screen completely before the display cable is freed in the next step.
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If the screen is still stuck to the frame, slide an opening pick around the entire perimeter until the screen separates completely.
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Flip the phone over, screen-side down.
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Lift the bottom edge of the phone and carefully thread the display cable through its gap in the frame.
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Remove the screen.
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If your screen didn‘t come with preinstalled adhesive, secure the screen with custom-cut adhesive or pre-cut double-sided adhesive tape.
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After installing the display, apply strong, steady pressure to the perimeter of the replacement screen for several minutes to help the adhesive form a good bond—a stack of heavy books works well.
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Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before you install it.
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 Xiaomi 12 answers community for help.
Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before you install it.
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 Xiaomi 12 answers community for help.
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