horizontal blue line going up and down

[Bilawal]

hey i want to ask if anyone knows_ my galaxy s6 edge touch suddenly stopped working and a blue horizontal line going up and down on the lock screen when i touch the screen it makes sound

[JB0071]

did you drop or bang your phone?

[Bilawal]

no never

[MattyGdx]

if it's going up and down it's a vertical line

[Bilawal]

yeah but it's horizontal blue line

[MattyGdx]

So it's going from side to side then