Samsung Galaxy Note 4 half screen static ??how can I fix this?

HELP !!,
how can I fix this?
half screen static on the right side . Touch screen working . No cracks to the phone,. No water damage at all .
I did a factory reset. Still no success .

Sprint phone seems to be half flashed to Boost Mobile need help full flashing

I bought a LG G4 from my local Boost Mobile shop that was flashed from Sprint. He sold it to me at a very low price of 0 when it was 0 at the time because not even he could figure out why talk/text would work but not data. Wifi works perfect but when I leave my wifi spot or turn wifi off data is non-existent. I bought the phone from him knowing that data didn't work, and at the time I didn't need data, but now I do. It is a cdma phone because I see no slot, after taking the battery out, where a sim card would be inserted. Is there any possible way to get this phone flashed a second time to a full flash from a potential half flash? If so can you please give me a step by step guide, link a definite guide that WILL work, and or, a video that WILL work? Thank you in advance, and hopefully I can get this issue resolved because this phone, although not the latest, is a magnificent mobile device and I would sure hate to have to discard it because I can't get data on the go.

Half screen blocked out

Got my other 6p in the mail yesterday , back up and running. Got the other 6p to boot and it ran for about a day when all of a sudden the right half of the screen (looks like wallpaper as everything functions under it ), not sure why it came up , havent had a chance to mess with it yet

Sent from my Nexus 6P using XDA-Developers mobile app

White Lines across the bottom half of my smartphone screen

One morning I woke up and the bottom half of my Samsung galaxy avant (SM-G386T) had a grid of white lines going across it. First time I restarted my phone it went away.

But they keep coming back and now it's more permanent, Sometimes it goes away briefly but they come right back. I tried factory resetting. That worked the first time for a few hours but then it came back. and I tried it again and 2nd time there white lines where there during the factory reset.

I tried taking the back planel of the phone off. I disconnected and reconnected the lcd latch on the left side. But the problem still persists. I haven't pulled up the screen with a suction cup. So Idk if there is a cable that could be loose on the front end or not. But Idk want to go buy suctions cup if I dont need to you.

What do you guys think? I think its a hardware issue. But I may be wrong. if so. is this fixable or do I need to buy a new screen