Hi @vamsee54 Is this a green or pink line? These lines tend to be a hardware fault that requires a repair and visit to Samsung Service centre, would need to consider if this would be worthwhile.
You could ry the following, Open the phone app, bring up the keypad, and enter *#0*# before hitting call .
In the menu, try selecting the various color options: Red, Green, Blue, and Black. you may find that cycling through the display colours fixes this.
you could through the Troubleshooting on this link https://www.samsung.com/uk/support/repair/
select your product and phone model - Buttons, screen, display and accessories -Display on your device - Colours, backlight and appearance - My screen has a line (or lines on the display.
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
