[Huawei P20 Lite Questions & Answers] jdxgfty:
Hi,

Yesterday while I was browsing normally, the phone suddenly froze and I couldn't do anything, not even turn off the screen. Then after like 3 mins the screen went blank. (it was turned on, but blank)

Some background,

this problem with the screen happened a few times before, at first it would happen randomly when trying to turn on the screen, it would turn on, be blank, flash a few times and turn off again, but a reboot would fix it. This happened like once a month.

Then it stopped happening when trying to turn on the screen, instead it started happening everytime I try to reboot. The Huawei logo and animation would show, but instead of showing the lockscreen it would again be blank, flash and turn off. It would be back to normal after a few hrs and/or after a reboot or two.

THEN the only thing that changed is that it would be blank even when booting up. The Huawei logo wouldn't show up.

However, the phone worked, sometimes the screen, instead of flashing, would stay turned on then dim down and turn off like it would normally do on the lockscreen. The touchscreen also worked because I managed one time to shut the phone down. I would also hear that startup sound after rebooting. At this point I thought it's a hardware issue, something with the display.

Now back to what happened yesterday, I think I rebooted the phone some time after it went blank, but now I couldn't hear the startup sound anymore, and I still couldn't turn off the screen.

I left it like that until the battery died, then when I plugged the charger the red led turned on, I waited for it to charge a bit, then when I tried to turn it on the red led started flashing. And maybe I'm paranoid but the flashing was a bit off, it wasn't the normal flashing you get when you have a notification for example.

I was tired so I went to sleep and left it like that overnight.

In the morning the screen was still blank, the red led was still flashing, and after I rebooted the screen went back to normal and I finally saw that the phone is stuck on this screen:

View attachment 5924117

(image taken from a yt video)

I tried Power + Volume Up to try to go into recovery, it didn't work. It just reboots and stays stuck on that screen. Actually the only thing that worked was going into fastboot. (with Power + Volume Down)

The bootloader and FRP are both locked.

Some info from fastboot:

Z:\adb\platform-tools>fastboot oem get-build-number
(bootloader) :ANE-LX1 9.1.0.401(C432E13R1P7)
OKAY [ 0.006s]
Finished. Total time: 0.007s

Z:\adb\platform-tools>fastboot oem get-product-model
(bootloader) ANE-LX1
OKAY [ 0.007s]
Finished. Total time: 0.008s

Z:\adb\platform-tools>fastboot getvar vendorcountry
vendorcountry: hw/eu
Finished. Total time: 0.006s

Z:\adb\platform-tools>fastboot oem oeminforead-CUSTOM_VERSION
(bootloader) :ANE-LX1-CUST 9.1.0.13(C432)
OKAY [ 0.006s]
Finished. Total time: 0.007s

I was thinking maybe I can unlock the bootloader using the hardware testpoint method, with PotatoNV, then install TWRP and try to backup the data at least. (I never used TWRP, I just saw there's a Backup button, idk how/if it works)

But since it can't go into recovery, I wonder if I would be stuck on some screen again.

What should I do?