I also encountered this. The greenline appeared like 5 minutes after the update of 5.1 UI. Any updates to fix this?
I also have the same model. a73 5g
Nothing To say about This Problem.
I was think that only samsung S Series have this problem..
But Now **bleep** I see The line issue in my Samsung A73 5G.
Only 8 months I used This Device and now Facing this problem..
Samsung Should Have Do Someting For this Problem..
Have the same issue. They will charge 8500 rupees to replace the display. They are not ready to accept responsibily like one plus which has provide lifetime warranty for the greenline issue. Better not to buy samsung products.