I’ve got one green line alm of a sudden one day. Shut the phone off and on. Line disapoeared. Few days later take phone from pocket and now I have 2 lines. Restart fixed that again. Next morning more lines again. Tried to massage them. Seems that when I pushed near left 2cm from bottom of the screen, more lines appeared and when I removed pressure, they STAYED. OMG !!!!! After about one month the green stuff has stabilized. I now have a 5mm Wide light saber from star wars on my screen. Really annoying and bright in the evening to look at. Stopped using facebook and insta because of that. Went to apple. Apple said that screen is under warranty and they will fix that for free, but that was before he saw that the back was cracked. I got turned down. No repair for me.
Maciej