Chosen Solution
I dropped my phone about 2 days ago and have been facing this problem ever since,
My phone has no physical damage from the drop (about a couple of foot drop) but my screen now has these purple & white lines. These are kind of decreased if I do a hard restart (Home + Power) but come back again after a while. touch is fairly responsive and phone works fine as usual. Any leads as to what might be wrong ?
Yes. The screen needs to be replaced. You can either take the phone to a reputable repair shop or replace the screen yourself. I’ll provide some links to iFixit guide and part if needed for DIY screen replacement. iPhone 6 Screen Replacement iPhone 6 Screen