LG G4 left half of screen gone black ???

I purchased an LG G4 H818P dual sim from Dubai. I've used the phone for about 2 weeks now and suddenly for absolutely no reason the left half of my screen has gone full black (split down the middle). The touch still works though. I have tried a hard reset which didn't work. On some forums people with the same problem said they removed the screen protector and it solved the problem. I did likewise but to no avail. Can anyone assist urgently please.

Half my screen rainbow snow

Anyone having the issue where half your screen turns to a rainbow colored snow pattern like an old TV? (vertical, right half) It seems to be an overlay and recognizes the touches underneath, but it won't go away. I've seen others with this issue on other forums, but I don't believe I've seen this here yet. Not sure what' going on. I have just filled out a support request with LG. The only fix available right now is to exchange the phone it seems.