I'm posting in the S21 section but this affects almost all models of Samsung phones according to reports...
Have any of you experienced an issue with your phone battery expanding? I haven't but then I don't hold on to my old devices.
Then why comment? This isn't simply about batteries failing due to old age. It includes phones such as the Fold 2 and S20 FE! Also worth mentioning that Samsung had collected his phones (more than 50 days ago) and have failed provide a reason, repair or replacement of any kind.
Anyway, if anyone has any Samsung phones hidden away in an old draw then best go take a look. Better safe than sorry!