Nagesh_Neol20 , via OnePlus 7T , Apr 8, 2021 : I dont know what happened to my mobile ,my mob never fell down but a yellow line on my one plus7T device... Please do check and do needful Check the Picture
Sheppards , via OnePlus 7T , Apr 8, 2021 : This is 99 % a hardware defect Also please note, that there are only users here, no "OnePlus team" and we can't "do the needful"
camohan , Apr 8, 2021 : Hi there, please restart and check if the issue persists. Also try taking a screenshot and if the line doesn't appear in screenshot, it's most likely display issue. You should reach out to service center for hardware issue. Hope this helps.