After reporting to Samsung consumer service hotline, they call back and say since the handphone is already after warranty period, any repair will be chargeable. What a joke! If the cause of the green line is the online update of software provided by Samsung and spoil your phone, they also don't care.
Apparently many of us have the same issue after software update, but they insist this is phone issue. Since asking us to repair is the standard answer instead of investigation. I choose not to use samsung in the future. Bye Z fold 3, bye samsung.
