https://r2.community.samsung.com/t5/Galaxy-S/S23-White-Red-Green-line/td-p/21151236?src=ShareByUserCM

You should get your display replaced, the same thing happened to me. It started out kinda like yours.https://r2.community.samsung.com/t5/Galaxy-S/S23-White-Red-Green-line/td-p/21151236?src=ShareByUserCM

https://r2.community.samsung.com/t5/Galaxy-S/S23-White-Red-Green-line/td-p/21151236?src=ShareByUserCMI got mine replaced, I bought it from Amazon and the billing contact was someone else's so they asked for their Aadhar details.

Ask him to get you the invoice and masked aadhar copy.If there's no physical/liquid damage you would be able to claim the FOC.

I got mine replaced in 2 days, they said it'd take about 7 days since FOC needs approval.