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.
if the back cover is not broken, i’d suggest NOT to use an opening pick as if the phone was not heated enough, you may crack the glass on the edges. better use the iPlastix, it is thinner and less stressful for the glass.
I have to agree that is is much easier to start opening from the side. Do read the rest of the guide though, to make sure you won’t hit something when opening it from the side.
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Remove the rear glass.
Das mit den Klebstreifen funktioniert nicht. Ich habe die Tube E6000 in die Dichtungen eingeklebt und so das Smartphone wieder zusammengesetzt.
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Remove the motherboard cover.
Porque cuando desconectas el nfc no vuelve a funcionar?
a teraz to zopakuj po vychodňarsky
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Use the flat end of a spudger to pry up and disconnect the battery flex cable.
Das Flachbandkabel kann einen Zentimeter zu lange sein. Ich musste ihn 2 mal falten, um beim Einbau die Steckerbuchse wieder zu treffen.
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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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Once the screen is warm to the touch, apply a suction cup to the upper 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 plastic bezel. Start to cut the adhesive by sliding the opening pick to the top left corner.
There will be 2 gaps one under the screen glass(the one you should open) the secod notch down is where a fragile plastic frame is. Stay away from it and use the upper notch
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Use a pair of tweezers to peel the display flex cable free from the frame.
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Thread the display flex cable through the gap in the frame and remove the display.
after this part, even after heating the screen it didn’t come apart in one shot, i had my digitizer, led, and protective all apart and still no access to remove the display flex cable, tore a cable connecting to the screen and now my phone is trash. somehow you managed to bypass this part and magically go to the part where you can see the home button? not happy. “Remove Display” you make it seem so easy yet this is the part that destroyed my phone. Please include the step 33b that we need, thanks
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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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11 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.
Habe den Rahmen erfolgreich mit dem T7000 Kleber befestigt. Hat sich eh erledigt, da sich beim Ausbau des Displays an der unteren Kante des OLED ein Riss gebildet und das Display nun nicht mehr angeht. 270€ für ein neues Display lohnt sich nicht. :(
Thorsten -
Super Anleitung, vielen Dank!
Bei dem P20 pro meiner Frau wird der Fingerprint Sensor heiß.
Ist das ein bekanntes Phänomen bei defekten Sensoren?
I followed this manual, thanks for explaining all of this! Unfortunately my phone does not work any more. Hoping somebody knows what needs to be replaced:
When I charge it, charging light is on and it vibrates when I connect the cable as normal. It does go very warm around the port and also doesn't show charging progress. No screen image at all.
When I try to turn it on, the screen flickers in a couple of lines, then the backlight is on for a couple of seconds, then off again.
All the alarms still go off, with no way to turn them off because there is no screen image.
Because the alarms are still working I'm not completely sure the phone is off. My guess is that it is not booting, I think the alarms still work even though it is off, but not sure.
Thanks for any help!
I don't recommend removing the battery and display, it is possible to remove and install a new the finger print sensor only by removing the speaker (disconnecting the battery is also a good idea). It is a bit tricky to fiddle the flexprint through the hole and then below the bar of the frame to plug it into the connector, but it is possible and you don't risk to destroy the display during disassembly.
In order to replace the fingerprint reader/home button, you need to remove the display and battery. You might be able to leave the battery in place, but the display has to be removed.
Hello, I have replaced the sensor, but the OS is not recognising it. Does the fingerprint sensor needs to be paired with the mainboard? I tried wiping the cache and factory reset, but without success. Thanks for any help!
Ich hatte keinen iOpener. Daher hab ich das P20 Pro für ein paar Minuten auf eine Wärmflasche gelegt. Die Klebeschicht konnte relativ schnell gelöst werden.
David T. - Contestar