this morning I've been quite dumb: trying to insert the sim into the newly arrived mate 20 pro, I inserted the pin into the left bottom hole instead of into the correct one on the sim slide...

Does anybody know what are those two holes? Microphones? May I have broke something? For example the waterproof integrity?

I installed a testing app and tried to register covering alternatively the two holes and it seems that the phone correctly register my voice..

.

There is a third hole on the top, is that another microphone?

I'm not sure I damaged something: when I phone, on the other side my voice is well received, besides I re-tried to insert (extremely slowly and carefully) the pin inside both the bottom holes and it find something hard at the same depth, so it seems that nothing has been perforated.... but, I really would like to know where to find technical schematics or tear down videos to see how these two microphones are mounted and which is their function.

If I try to register something with the recorder app and I tap alternatively on the left hole and the right hole, only the second tap is registered... so two are the cases:

1) I destroyed the left microphone, but the right one is sufficient for any application to work correctly

2) Nothing is destroyed, but the left hole is something else or the microphone inside is used for other purposes (noise reduction?)

Does anybody know where to find the phone schematics?

Thank you for any answer

⟐ Commented July 26, 2023 at 14:46 MST

You guys know where I can fix broken lcd screen of Mate 20 Pro, I mean in US.

Thanks in advanced

⟐ Answer edited March 10, 2019 at 17:16 MST

⟐ Commented September 13, 2020 at 16:57 MST

⟐ Commented June 15, 2019 at 13:30 MST

When I take off the backplate above the motherboard the camera works fine, but as soon as I put the backplate back on the camera stops functioning.

Anything I should watch out for? Any help is appreciated!

Is there anything that can be done about this?

⟐ Answer accepted October 09, 2022 at 19:17 MST

⟐ Answered March 12, 2022 at 17:50 MST

I’m assuming it would be a good idea to replace this when transplanting to the new frame but I’m just wondering if I can use any thermal paste? I have some Artic MX-4 from a previous job, will that do?

Any input would be greatly appreciated. Thanks in advance!

⟐ Answer accepted June 05, 2021 at 7:49 MST

Is anyone can suggest where to get a replacement screen + glass in the UK? For a Huawei Mate 20 Pro

Cheers

⟐ Answer accepted February 26, 2021 at 8:15 MST

⟐ Answered May 10, 2019 at 14:18 MST

⟐ Commented November 28, 2021 at 12:59 MST

- Missing part encircled in red

- Picture of the part.

⟐ Edited by author August 09, 2020 at 8:17 MST

The problem seems to be the volume rocker is not making contact with the ribbon switch. From what I can make out there is the rocker and below that there must be some sort of pin that interfaces with the switch on the ribbon.

Basically how do you remove the volume rocker without replacing the midframe? (it would seem replacement mid frames come with the volume/power switches installed )

Yes you can remove the buttons as I have just completed this!

To remove the buttons, remove the back glass. Once inside look close and on one side of the button /rocker you can see a tiny retaining plug, with sharp tweezers you can pry it out (there is one for volume and one for power) once removed the button is free. Replace the volume / power switch and while depressing the button insert the retaining plug.

In my case the volume rocker had broken lumps that make contact with the pins which in turn press the ribbon switch.

I must now be in a minority of chrome mate 20 pro's with a purple volume rocker (I bought a 2nd hand midframe in order to find the solution )

⟐ Edited by author January 04, 2020 at 18:14 MST

I have bought a Huawei Mate 20 Pro, Don’t know any previous history of the device. When i put it on charge the small red led starts flashing at the top of the screen and i leave it for an hr/2 still is flashing and doesn’t turn on.

I’ve put a new battery in it but that hasn’t made any difference what could this be? tried putting in in safe mode/recovery mode but screen stays blank. It did show huawei logo once when i put it on charge held power /volume button and quickly disconnected battery but turned off aster 5 seconds.

Also phone vibrated when i plug the charger in and hold power and volume up but nothing shows on display.