Sony Xperia XA1 Ultra Screen Backlight Problem

[domnsync]

Hello guys!

I'm not sure, if anyone of you has the same problem with me. I bought my product 3 months ago, there was such no problem with the screen. Today, in the morning, I've realized that there is a backlight problem with the screen at the top-right corner where the curved surface starts. From top to down, about 1,18 inch lenght; there is a strange backlightning. It stays just like that, it's not quite clear to see when there is some dark colour on the screen but it is pretty showing itself on light colours especially on white, and gray. A few days ago there was a small system update. Is it something related to it? I'm confused.

[domnsync]

I sent my device to the service and they have replaced the whole screen with the new one. Without any charge of course. I think there wasn't any alternative way for me to fix it in any other way, yet the service managed it very well.

[domnsync]

After the service process, it's been two months. And the problem is occurring again. I don't know that causes this. Maybe the service lied to me, because the strange greenish lightning is appearing on the same point, where the previous one apearred. I will send it to the service again, let's wait to see what will happen. 

[Logan8]

Now i have the same issue... 

Something like orange or yellow.. 

How did i solve this.