Yesterday I was makeing payment suddenly my s21 ultra went black wow Samsung great job I mean how can it be. now it's sits in service center before that I tried everything that mentioned in internet no use hard reset, using charger etc.phone is worki...

Yesterday I was makeing payment suddenly my s21 ultra went black wow Samsung great job I mean how can it be. now it's sits in service center before that I tried everything that mentioned in internet no use hard reset, using charger etc.phone is worki...