I have an iPhone 6. It screen was changed about 10 months ago and its battery was changed about 1.5 months ago. Yesterday, I suddenly noticed that half of the screen is darkened and with yellow-ish vertical lines. As far as I can tell, there was no immediate damage that was connected to this (i.e., no drops, or water damage, etc).
This appears to be a hardware issue and I don't know if it is related to either of the fixes.
Here is an attempt at a screenshot (which is taken from my macbook):
Does anyone have an idea what this problem is and is there an easy way to fix this? Do I need to purchase another screen?
I don't live in North America, so getting a screen replaced will cost more than $200USD, so I would like to avoid that.