Chosen Solution

The screen on my iPhone XS Max has the following symptoms recently: Touch screen is half responsive, which means sometimes fully responsive, but some times not responsive.image “shaking” or flicker, some times, not always. here is the history of the phone, screen was damaged last December, so, I have it replaced in Jan. this year, (I have it replaced with the aftermarket part, not the OEM one from Apple). It works pretty good so far until those symptoms shown up few days ago. So, what could be wrong, the display becomes bad or the GPU on logic board might be the issue? Any thoughts? thanks,

It is most likely a faulty screen. You will need to replace it first before looking at the GPU. Do not buy an LCD screen, replace it with an OLED one and you shouldn’t have this problem again.

You must turn off the iphone and see if there’s any line in lcd under the glass and this image is the type of lines make sure the screen is clean