Einleitung
Use this guide to replace a broken or defective LCD Screen & Digitizer in your Huawei Mate 20.
Note: This guide instructs you to replace only the screen while leaving the original frame and motherboard in place. However, some replacement screens for this phone come pre-installed in a new frame (a.k.a. chassis), which requires a very different procedure. Make sure you have the correct part before starting this guide.
Opening the Huawei Mate 20 will damage the waterproof sealing on the device. If you do not replace the adhesive seals, your phone will function normally but will lose its water-protection.
Before disassembling your phone, discharge the battery below 25%. The battery can catch fire and/or explode if accidentally punctured, but the chances of that happening are much lower if discharged.
You’ll need replacement adhesive to reattach components when reassembling the device.
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Before you begin, switch off your phone.
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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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Secure a suction handle to the bottom of the back cover, as close to the edge as possible.
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Lift the back cover with the suction handle to create a small gap between the cover and the frame.
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Insert an opening pick into the gap.
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Slide the opening pick to the bottom right corner.
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Insert a second opening pick and slide it to the bottom left corner to cut the adhesive.
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Leave the opening picks in place to prevent the adhesive from resealing.
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Insert a third opening pick at the bottom left corner.
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Slide the tip of the opening pick from the bottom left corner along the side of the phone to cut the adhesive.
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Leave the opening pick in its place at 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 back cover.
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Slide the opening pick along the top edge of the phone to cut 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 at the top right corner of the phone.
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Slide the opening pick along the right side to cut the remaining adhesive.
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Carefully fold the back cover to the right side of the phone assembly. Avoid tension to the fingerprint cable during this procedure.
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Slide an opening pick under the bottom end of the black protective foil that covers the battery. Use the opening pick to loosen the adhesive that attaches the foil to the loudspeaker.
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Use an opening pick to carefully pry the flash assembly off the motherboard cover and fold it into the direction of the battery. Avoid damaging the flash assembly flex cable.
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Use the pointed end of a spudger to unhinge the motherboard cover from the small hook above the left side of the battery.
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Slide an opening pick underneath the left side of the motherboard cover.
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Use the opening pick to pry up the motherboard cover.
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Remove the motherboard cover including the NFC and the black protective foil. Avoid damaging the flash assembly during this procedure.
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Use a pair of tweezers to peel the silver protective tape off the front facing camera’s flex connector.
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Use a spudger to pry up and disconnect the front facing camera flex cable.
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Use a spudger to pry up and disconnect the main flex cable.
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Carefully fold the main flex cable back and out of the way so you have enough space to work on the bottom edge of the motherboard assembly.
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Insert a spudger into the gap between the motherboard assembly and the midframe at the bottom edge of the motherboard.
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Use the spudger to pry up the motherboard assembly.
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Carefully remove the motherboard assembly. Avoid damaging surrounding components such as the battery or the headphone jack flex cable during this process.
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Apply a heated iOpener to the screen and all edges of the phone for at least two minutes, to loosen the adhesive.
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Once the screen is warm to the touch, apply a suction cup to the bottom edge of the phone.
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Pull the suction cup upwards and insert an opening pick in the gap between the display glass and the midframe. Start to cut the adhesive by sliding the opening pick to the bottom right corner.
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Insert a second opening pick and slide it to the bottom left corner of the phone to cut the adhesive.
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Leave the picks in their place to prevent the adhesive from resealing.
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Insert a third opening pick under the bottom left corner of the phone.
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Slide the opening pick up to the top left corner to cut the adhesive. Leave it there to prevent the adhesive from resealing.
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Insert a fourth opening pick at the top left corner.
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Slide the opening pick along the top edge of the phone to cut the adhesive. Leave the pick in the top right corner of the screen to prevent the adhesive from resealing.
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Insert a fifth opening pick and slide it along the right edge of the phone to cut the remaining adhesive.
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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? Check out our Answers community for troubleshooting help.
