S6 after full reset

[Msparky]

Hi,i have an old S6 id like my son to use but after iv wiped it the phone displays a message telling me to log in using i.d and pword,however i would have used an old email etc which i cant remember,my phone now an S10 has a totally different i.d log in for my samsung account.Any ideas how i can get around this other than sending to Samsung for a repair ?Thanks

[BandOfBrothers]

This is a security feature @Msparky 

Perhaps the old email is still present in your list of emails if you log into your email server.

[Msparky]

Thanks for that,however ive no idea of any my old emails log ins so wil probs consult a mobile fone shop i jus thought id try here 1st