Introducción
Use this guide to remove and replace the home button including the fingerprint sensor in the Huawei P20 Pro.
Note: This guide instructs you to replace only the display 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—transplanting all your phone's internals. Make sure you have the correct part before starting this guide.
Opening the Huawei P20 Pro will damage the waterproof seals on the device. If you do not replace the adhesive seals, your phone will function normally, but will lose its water protection.
Do not reuse the battery after it has been removed, as doing so is a potential safety hazard. Replace it with a new battery.
Before disassembling your phone, discharge the battery below 25%. If your battery is swollen, do not heat your phone. Swollen batteries can be very dangerous, so wear eye protection and exercise due caution, or take it to a professional if you're not sure how to proceed.
You’ll need replacement adhesive to reattach components when reassembling the device.
Qué necesitas
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Switch off your phone.
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Use an iOpener to loosen the adhesive beneath the rear glass. Apply the iOpener for at least two minutes. You might want to repeat this step several times during the back cover removal.
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Press a suction cup onto the rear glass close to the bottom edge of the phone.
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Lift the bottom edge with the suction cup, opening a slight gap between the rear glass and the frame.
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Insert an opening pick in the gap and slide it to the bottom right corner. Leave it there to prevent the adhesive from resealing.
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Use the flat end of a spudger to pry up and disconnect the battery flex cable.
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Remove the five Phillips #00 screws (3.4 mm length).
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Use an iOpener to loosen the adhesive beneath the battery. Apply the iOpener on the display for at least two minutes.
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In the following step, only apply the spudger in the areas marked in red, which is where the battery adhesive is located.
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Avoid the orange area where the display flex cable is running.
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Use the flat end of a spudger to pry up and disconnect the display flex cable at the bottom left of the motherboard.
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Prepare an iOpener and apply it to the display for at least two minutes to loosen the adhesive beneath.
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Lay overlapping strips of clear packing tape over the display until the whole face is covered.
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This will keep glass shards contained and provide structural integrity when prying and lifting the display.
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Use an opening pick to open the black flap of the home button ZIF connector.
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The best way to re-apply the screen is with a sheet of custom-cut double-sided tape. Remove any old ahesive and apply the new tape to the back of the screen, then carefully feed the display cable through the frame. Align the screen and press it into place.
To reassemble your device, follow these instructions in reverse order.
If possible, turn on your phone and test your repair before installing new adhesive and resealing the phone.
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.
The best way to re-apply the screen is with a sheet of custom-cut double-sided tape. Remove any old ahesive and apply the new tape to the back of the screen, then carefully feed the display cable through the frame. Align the screen and press it into place.
To reassemble your device, follow these instructions in reverse order.
If possible, turn on your phone and test your repair before installing new adhesive and resealing the phone.
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.
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9 comentarios
Hello, is p20 fingerprint sensor same as p20 pro and can u switch them betwin models? Thanks for answer.
Is it really needed to dissemble all the phone? The more I look at tutorial, the more it seems you can just unglue the screen (while it's still attached to the phone) and remove the fingerprint scanner. I'm I wrong?
Hi Christo,
the display cable of the Huawei P20 Pro is held in place by adhesive underneath the battery. Not removing the battery and loosening the adhesive underneath the cable will result in damage to the display and/or display cable when trying to lift the screen. At the same time the glued cable will hold the display in place and it won’t be possible to lift the display high enough to open the ZIF connector of the fingerprint without causing critical tension to the cable. However it can be possible to do it the way you were mentioning but this will require some experience with smartphone repairs and a good amount of instinctive feeling.
Leider ist mit beim Herausdrücken des Sensors der Metallrahmen mit herausgefallen. Diesen bekomme ich jetzt nicht mehr fest. Was mache ich denn jetzt? :(
Hi Thorsten, Ich vermute mal, dass der Metallrahmen auch mit Klebstoff von hinten am Display befestigt ist. Wenn du sagst, dass du ihn nicht mehr fest bekommst, liegt es daran dass es nicht mehr klebt oder der Klebstoff verformt ist. Falls noch gut in FOrm kann es schon genügen ihn warm zu machen und wieder ran zu drücken. Ansonsten muss man womöglich den alten Klebstoff entfernen, die Stelle reinigen und neuen Klebstoff anbringen. Zum Reinigen benutzt du am besten Isopropanol (>90%). Als Klebstoff bietet sich dieses doppelseitiges Klebeband an (könnte evtl aber auch zu schwach sein zwecks des Drucks auf den Button) oder ein Klebstoff wie der E6000. Allerdings ist es schwer zu sagen wie die Stoffe sich mit dem Display vertragen. Auf jeden Fall viel Erfolg mit der Reparatur.
