⟐ Commented February 09, 2026 at 8:55 MST

I opened my phone back cover ….

for doing testpoint for fixing software thing …

I flashed a few firmware ( ROMS)

for test … in beginning everything was working…

in my last try phone was bricked …

so need to open back cover for testpoint…

it’s took me a week to work with phone till

can fix it to work again…

everything looks good…

but I have no network… no service…

phone doesn’t recognize the sim….

I tried to look if something is no connected…

but it’s all look ok….

I don’t know how? and where to check for fixing the problem??

what should I do?

please help

⟐ Answer edited June 09, 2022 at 19:31 MST

I would be happy if someone who has the software zxw can find me the resistance level and the size of these resistors.

(By the way, so that more people can use this in the future, I will mention that two of them are on the sim way)

I marked the resistors here.

Thanks!

huawei p30 pro

⟐ Answered October 08, 2025 at 1:25 MST

I had a broken P30 pro screen, with it, the earpiece speaker (no grill, vibrating one). replaced the piece and cant hear, is there something special I should know about like what apple does with linking the home button/batteries to motherboard? Everything seems to be in order

⟐ Answered November 03, 2023 at 6:18 MST

⟐ Commented August 13, 2024 at 3:31 MST

Does the entire back need to come off or can the glass be replaced from the outside?

⟐ Answer deleted September 29, 2022 at 3:17 MST

Hi dear iFixit community,

I have a problem with my P30 Pro. My WiFi and Bluetooth are both dead. When I turn the toggle on it stays on for 1-2 seconds and turns it self off. It doesn’t scan for any networks though as it stays blank. So could anyone please tell me the location of the wifi chip on the logicboard? The teardown left me clueless..

It had a drop damage and got an entire new Housing/Oled Display assembly (Original Huawei part). Celular data etc. still work though.

Thanks in advance.

⟐ Answered January 24, 2020 at 8:42 MST

I am sure the problem is in the 2-jack section, because before it stopped working it sometimes got really quiet so I could barely hear anything, and I could fix that by rotating the sound jack so it can get better connection.

soo idk if the images are here somewhere, I'll just send a link now https://imgur.com/a/qmcJq7M

idk what should I connect to what because of the wire numbers being off @amber

@abhimannuec should I connect it like this?

https://imgur.com/a/glKgyJS

⟐ Commented July 23, 2024 at 14:37 MST

⟐ Answer edited May 20, 2024 at 5:52 MST

Another point - I actually managed to charge it ONCE from 10% to 60% without it stopping, battery temp was normal (13-18°C, showing at diagnostic tool, --talking about old battery, which is the one im able to boot with and is still in phone, coz new one doesnt work for me - any ideas why?) Only thing i thought might cause the problem where broken pins on old flex cable i already replaced (pins on mobo seems fine with naked eye, dont have microscope sadly)

So another question, where is temperature sensor actually located, so is there a way to check it if it is ok physically?

Also in eRecovery mode top right icon (battery% one) shows charging when charger plugged in.

I tried :

• Factory reset (settings)
• Factory reset (Power+VolUp)
• Clear cache (Power+VolUp)
• Hotswap battery while charger in (heard it might boot with the new one coz it thinks its old one)
• Cleaning pins
• 5 different chargers from 5W to original one

I BEG FOR HELP, IM SO HOPELESS haha

THANKS FOR ANY TIPS.

⟐ Answer edited March 25, 2025 at 15:10 MST

⟐ Answered February 27, 2025 at 16:04 MST

https://www.digikey.com/en/products/filt...

Thank you!

⟐ Answered April 29, 2024 at 17:32 MST

my display broke so i decided to change it the first time by myself including a new battery. after assembling the phone back together, i tried to switch it on. the huawei and android logo are being shown on the display, but 10 seconds after that, the screen gets black. i tried entering the emui bootloader and got in. i did a whipe and factory reset, cleared the cache but nothing changed. i tried everything else too, but it looks like it cant boot android. what should i do now?

⟐ Answered March 11, 2023 at 18:25 MST

I replaced the screen and the device seemed to functioned perfectly only to find the power button would not respond and/or turn on or off the device.

I know for a fact it was working before. Still with no solution a second P30 Pro came into our shop a week later for a screen replacement again. I just completed the screen repair only to find it has the identical issue with the power button!!!

anyone have any solutions or come across this before!? I’m out of ideas.

⟐ Answered May 12, 2022 at 8:44 MST

Additionally the main camera does not work, and apps say Error with camera etc each app warns uniquely that it cannot connect.

Sometimes after a reboot, like 30% of the time, camera can activate, however main camera cannot focus. Wide and tele seem fine.

So what seems to be the issue based on above?

⟐ Answered July 02, 2024 at 1:52 MST

I’ve recently replaced the screen of my Huawei P30 Pro Dual-SIM (VOG-L29). Since that, I have a little less WiFi signal, but most importantly, my Bluetooth signal is very bad and every little move of my phone or the headphones makes it stutter and lose the connection. Both antenna flex-cables are attached. When I hold my hand close to the camera, the connection breaks instantly. No software changes did help. What parts could fix this problem? Is maybe one of the antenna cables faulty? Thank you very much for any advice on this.

⟐ Commented June 29, 2023 at 7:23 MST

I am writing to inform you about a recent issue I have been experiencing with my phone. Lately, my phone has been automatically connecting to a VPN when connected to Wi-Fi. This problem causes many important applications to stop working, and it does not occur when my phone is connected to mobile data.

Thank you for your support.

Best regards

⟐ Answered May 13, 2023 at 9:51 MST

Salve a tutti, ho un Huawei P30 Pro finito sotto una macchina. Possibile recupero dati con il metodo chip off? I connettori fpc sono danneggiati, così come il flat di ricarica che va dalla main board. Il telefono ha pure il blocco schermo.

Hi, yes but screen is destroyed and there is screen lock.

fpc flat is broken, I must hold it in one precise position to make smartphone recognize. In truth pc try to recognize it.

⟐ Answer edited August 11, 2022 at 4:40 MST

The usb c port has been replaced so as the loudspeaker, I have tried multiple headphones, also tried the headphones on another device.

It charges perfectly, connects to my laptop fine, it just will not recognise my headphones.

Audio works fine via loudspeaker and bluetooth.

⟐ Answered March 17, 2026 at 21:55 MST

So I ordered a replacement sim module, opened the back cover of the phone and to my surprise (before doing any repair) the fingerprint sensor came online instantly and the sim registered on the network! I waited two days and all was working fine with no back cover. So I replaced the sim module to be safe. All still good.

I wait a week for some B7000 glue to arrive, in which time the phone was fully functional. I clean off the old glue with isopropyl alcohol, add new glue seal her up and wait 4 hours. I come return to find the original issue (no finger sensor and no sim recognised). Any ideas??? I'm considering just leaving the back cover off and getting a case :-)

⟐ Commented October 21, 2024 at 13:40 MST