My lg G3 got a red vertical line on the screen (it's been only onday since i started to use it)

[AC Question]

I didn't drop my phone anywhere , didn't even get it near water
just dowloaded the facebook and messenger app then i saw a red vertical line on my screen .

 

[B. Diddy]

Welcome to Android Central! Does it persist after a reboot? If so, bring the phone back to where you got it and ask for a replacement. Don't waste too much time, since the window for returning a phone is usually fairly short.