Vertical red stripe/line on my galaxy s3 screen ??

[Brazsty]

Hello guys, a while back my galaxy s3 lte (gt-i9305) started showing a red line vertically across the screen, when i pressed it the line whent away.... So i didnt care much more about it but now its stuck on the screen. Can anyone tell me what this is??

 

Here are a few pic's

 

http://prntscr.com/1niyja

http://prntscr.com/1niymp

 

Thank you.

[SSOB]

Type *#0*# in the dialar, and run the tests if they apear on the test too than you can try to RMA it if you have still warranty if not well it may be a software glitch or you need to replace the screen :http://www.ifixit.com/Device/Samsung_Galaxy_S_III