Not detected by PC + Selfie camera - Huawei P30 Pro Questions & Answers

Hi,
My P30 Pro isn't recognized by the PC, neither recognized by the phone so when i plug it in it only comes to "Only charging". In developer settings i've tried to switch to MTP and if i lock the screen and unlock it goes back to Only charging. Tried with few cables, with 2 computer. The main flex cable was damaged because of dropping the phone, its changed now and everything works except this...
+
The camera crashes when i try to switch to selfie camera. I've refitted the connector on the main board few times, still nothing. Should i replace?
Thanks for any ideas!

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[Q] phone not recognized (either download mode or MTP mode)

Hi,
first off, i have searched the forums and i have googled my problem, but i think this is a real specific problem,
my phone boots just fine. but my bottom three buttons aren't working whie in software. i CAN go into recovery using the three button method. (using the home button, so it workes just fine) but as soon as i enter recovery the homebutton (and menu and back button) wouldn't work anymore.
so i thought; it is an software problem so a new rom should do the trick. at least it is a good guess.
problem being, the phone isn't recognized by my, and others, pc. whenever i connect the phone (phone "on", at homescreen) the phone starts to charge but the pc does nothing. it doesn't even show "unknown device". Also in download mode no luck. not recognizable.
Strangest part? if i start to connect, disconnect, connect, disconnect (etc.) the phone 20-30 times, there is a chance it will be recognized. this is only not the case in download mode.
i replaced the cable and reinstalled (and redownloaded) the drivers numbers of times, also i used different USB ports (USB3.0 and 2.0)
Hope you guys can help me out.
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have you tried to toggle the usb debugging mode ?
Yes, tried that already. any other ideas?
bump, nobody an idea what to do?
tbh it sounds like the microusb port on the phone itself is dodgy. possible that the solder needs to be reflowed.
sounds logical, would it be possible to do this on my own? i have got a good bit of experience soldering. and is there anything i should know beforehand?
and the buttons, is it possibly in the software? or is there something else going on?
edit; it would be strange if the connector is dodgy, because every time i plug in the cable it starts charging, so atleast 2 pins are properly connecting
did u try to connect another phone ? or try to coonect it to another pc, maybe problem is in ur pc ?
klimeque said:
did u try to connect another phone ? or try to coonect it to another pc, maybe problem is in ur pc ?
Click to expand...
Click to collapse
my own phone is working just fine (xperia s), my brothers sgs2 works fine, and an i9001 also works good. tried it on a other pc and works just fine
bump, any other ideas? see above posts

[Q] Xperia Z Wont turn un unless usb connected

Hello
Recently i've bought an broken screen Xperia Z, for repair it (i got it like $300 bucks cheaper) and i was ready to buy the screen, but i battery was drained and i could not test it right, when i connected to the charger, it started red light, vibrate, then 3 continuous vibes, read on the internet, OK BATTERY DRAINED, i left it charge THE WHOLE NIGHT, and when i woke up in the morning it was orange (charging), later in the day it was green (charged) but when i disconnect it, it wont turn on anyways, when i connect it to a pc, it goes blue light (wich later i read it was fastboot mode). i read for making a repair with PCC, but it didnt fixed it, then i flashed it with Flashtool, with the latest software (wich had the Sudden death issue fixed) no luck. it wont boot. for it to boot, i have to connect it to PC and with fastboot run "fastboot continue", but most of the time, it reboots and goes redlight and vibrate 3 times then reboot, so i press the power button and it enters fastboot mode (if connected to PC) or loads charging if connected to wall charger, but it reboots again and goes to redlight vibrate reboot, sometimes it stay charging or in fastboot mode, but only "works" if connected in the USB.
when it stays in fastboot, i do "fastboot continue" and it loads the OS, and it works (well, the things i can do with a broken LCD/Touchscreen, i put my sim card and could call it, and it works, but i cant pick up the call). i can explore the phone memory etc. but if it reboots or if i disconnect the USB, it will almost always turn off. i havn't found a solution (or idea) of what can happen, i dont know if its normal since it has broken lcd/touchscreen or it definitely have a huge problem,
any ideas?
thanks in advance!
Maybe the battery is damaged, and the phone knows it and boots into some sort of safe mode to spare internal damage? When the is has booted you can take screenshots with adb if you have usb debugging enabled. Maybe try see if the os says the battery is damaged?
Sent from my HTC Sensation XE with Beats Audio Z715e using Tapatalk 2
heavy_metal_man said:
Maybe the battery is damaged, and the phone knows it and boots into some sort of safe mode to spare internal damage? When the is has booted you can take screenshots with adb if you have usb debugging enabled. Maybe try see if the os says the battery is damaged?
Click to expand...
Click to collapse
Well, actually it doesnt seem the battery is damaged, fisically looks ok and it holds charge, i cant debug because usb debugging comes off by default when flash stock software.
blackknigt said:
Well, actually it doesnt seem the battery is damaged, fisically looks ok and it holds charge, i cant debug because usb debugging comes off by default when flash stock software.
Click to expand...
Click to collapse
Correct me if i am wrong but does the xperia z not support usg-otg and mhl? You could rig the phone up to the tv with a mhl-hdmi cable and maybe use a usb mouse to select things, and enable usb debugging?
Sent from my Nexus 7 using Tapatalk 4
Nice idea, now i need to find who in this country (DR) have that adapter
i ordered the LCD screen assembly for repair it myself, but im still concerned about this, as i dont know if it will boot up anyways
my phone right now isnt booting. but as i cant see images i dont know what is it showing.
i noticed the touch screen is working indeed. (when booted, it plays sounds when tapping)
i will wait till the lcd assembly arrives. any ways, any other ideas on what may happen?
the ex-owner of the phone said it started like that when it fell and broke the lcd.
OK now, i've installed the LCD, the phone works, its ON, BUT the Volume Up button and the Power Button does not work when the phone is ON,
the Vol UP button seems always be pressed cause when i press the power button for some seconds, the Phone restarts and not power off or lock/unlock
Service tests: None of these buttons where recognized.
any ideas on any hardware fixes i could try?
I FIXED IT!!
dissasembled the phone, took out the side button flex cable and the volume up button on the flex was dirty, so it was having a false contact. (wich made the button always be pressed)
I took out the yellow tape and cleaned with alcohol and a needle (its so freakin small) and put the tape again and assembled the phone and voila! IT WORKS OK!!
Yes the vol up button pressed means u get fastboot. Now that you fixed the problem and repaired the phone enjoy. Btw nice job getting it up and running.
[email protected] Z

Xperia V stuck on fastboot

Hello,
Recently my phone dropped and half of my touch screen stopped working. I have disassembled my phone just to try if the old lcd will work when I plug the connector out and in again. I discovered that no so I have ordered the new LCD. During the reparation I accidentally broke coaxial cable between the antenna and motherboard so I ordered the new one. Now phone worked, but there was no phone signal but display and everything else worked just fine. I have disassembled the phone again when the new coaxial cable arrived but I have discovered, that I have bought bad one because it did not work. So I left the phone disassembled and wait for another one.
After I assembled the phone with the second coaxial cable my phone does not show nothing on the screen, even on the old LCD. When I connect phone to the pc I got instantly to the fastboot and I can get out of it. After fastboot reboot I get again to the fastboot.
Sometimes the LCD powers up but does not show nothing, and when the phone is in the charger the diode is red.
Does anybody have any idea how can I fix this problem?
I have tried to boot the phone without camera, speaker, antena, but nothing worked.
Anyone?

Huawei Mate 20 Lite, Big Problem.

Hey can any you help at all?
My P20 mate lite suddenly went unresponsive, plug it on charge no charging lights shows up, Even on the screen it doesn't say charging. Ive Tried turning the phone on/off no luck, tried rebooting it into safe mode, but for some reason it seems like the buttons have stopped working, therefore I cannot clear the phones cache.. Is there anyway I may be able to bring the phone back alive..
If I plug into the pc it makes the connected noise on the PC but nothing shows up on the pc or phone.. Any help would be very much appreciated. Thank you
Maybe you can try with HiSuite on PC
Benjaminayres93 said:
Hey can any you help at all?
My P20 mate lite suddenly went unresponsive, plug it on charge no charging lights shows up, Even on the screen it doesn't say charging. Ive Tried turning the phone on/off no luck, tried rebooting it into safe mode, but for some reason it seems like the buttons have stopped working, therefore I cannot clear the phones cache.. Is there anyway I may be able to bring the phone back alive..
If I plug into the pc it makes the connected noise on the PC but nothing shows up on the pc or phone.. Any help would be very much appreciated. Thank you
Click to expand...
Click to collapse
Maybe you can try with HiSuite on PC
Benjaminayres93 said:
Hey can any you help at all?
My P20 mate lite suddenly went unresponsive, plug it on charge no charging lights shows up, Even on the screen it doesn't say charging. Ive Tried turning the phone on/off no luck, tried rebooting it into safe mode, but for some reason it seems like the buttons have stopped working, therefore I cannot clear the phones cache.. Is there anyway I may be able to bring the phone back alive..
If I plug into the pc it makes the connected noise on the PC but nothing shows up on the pc or phone.. Any help would be very much appreciated. Thank you
Click to expand...
Click to collapse
It happens me before some days, i tried everything but nothing, i cant enter in safe boot, or to clear cache.. i send it in service fron the shop, and after 15 days they fixed, but they changed : Electrical components replaced SW update and functional test carried out. Board exchanged new imei, this was explained to me.

Boot powered off device directly into Fastboot mode

Hello,
I'm attempting to use hardware key combinations in order to boot into Fastboot mode, e.g.. Power + volume up & power + volume down.
The phone is unresponsive. But the phone boots normally when only pressing the power button.
I've read the tutorial about launching Fastboot through a PC connection here: https://forum.xda-developers.com/rog-phone-2/help/howv-to-phone-fastboot-mode-screenshots-t3966727
But in this case, that wont be an option since my display doesn't work, hence there's no way to accept ABD-permissions when prompted on the phones' screen.
I was initially trying to pull all the data from the phone through ADB. When I realized I hadn't accepted my PC's ADB permissions on my ROG Phone, I had to rethink..
So I thought I could plant my PC's RSA-key (for accepting ADB) in my ROG Phones storage through Fastboot, just pushing the file.
I was dumbfounded when I discovered my ROG Phone 2 to be the only android device I've owned, which seemingly doesn't allow for a raw manual boot into Fastboot? CAN THIS REALLY BE THE CASE?
Any input would be highly appreciated
EDIT: I've ordered an USB-c hub for inputting kb+m & HDMI, which should allow me to accept the permissions. Although some of the data I'm trying to reach are time sensitive, any second rescued would be of value!
Similar problem
Hello,
I have a similar problem. My display is broken but the phone seems to still work. I bought an USB-C hub, but when I connect the phone to the TV (via the side USB port) it only shows a white "Asus rog" logo for a few seconds and then vanishes. When I click the mouse the logo reappears again for a few seconds.
Did it work with the hub you got? Do you have an other idea? I need the data that ist sadly still on the phone.
Thank you for your help.
Kraid13 said:
Hello,
I have a similar problem. My display is broken but the phone seems to still work. I bought an USB-C hub, but when I connect the phone to the TV (via the side USB port) it only shows a white "Asus rog" logo for a few seconds and then vanishes. When I click the mouse the logo reappears again for a few seconds.
Did it work with the hub you got? Do you have an other idea? I need the data that ist sadly still on the phone.
Thank you for your help.
Click to expand...
Click to collapse
I did work with the usb-c hub. Never saw any white ASUS ROG logo, I'm not sure what's going on with your phone. Also I later replaced the screen third-party, since ASUS charges a lot of money and insists on factory reseting the phone. So you could always do the latter if nothing else works. Send me a PM if you want the display I got.

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