Oh, now I see that command, I see, as for the lose cable, what do you think I should do ?
It's impossible to tell without opening the phone, as mentioned it could be something as simple as a loosened cable. I think the damage you're seeing is most likely caused by either the GPU driver or loosened cable as OLED's typically don't damage like that, they get black spots or vertical lines but I have never seen a screen damage with horizontal lines.
First I would install the new rom and see if it fixes the bug. Since you have a tencent phone it means no warranty anyways, you have literally no reason to not unlock the bootloader and reflash the phone.
I see, very well I will try and see if it works
Anyway, how do I change or put the rom O_O ?
I won't be writing a guide but I can link you to guides:
Oh, thanks! So no need to open the phone?
I see, will give it a try
@TX11559 I'm sorry that I can't be much of assistance in this case. Since you have an unsupported configuration that we don't sell, we can't vouch for it working properly and troubleshooting becomes exponentially harder, since it has been flashed by your reseller before you got it. There's also the problem of your location and the fact that ROG Phone 3 isn't sold in your country. I'm sorry that you learned of this too late and can only wish you luck in solving your issues. Thankfully you have already received some help from other users. 🙂
By the way, I filmed the issues