How do I unlock my Samsung Z Fold 3 which i need to reactivate because my Fold 4 currently won't activate wifi or bluetooth following the last software update? I can't remember any system password and the phone is totally locked. My sim is in my other phone and I only want to use the Fold 3 on wifi and for bluetooth.
First backup your Fold 4, go to Settings, scroll to Backups and backup to both Google and Samsung. Next remove sim card and place in Fold 3. If you can access try to set several options to open (if necessary Google "open phone when sim card removed"). Note in writing changes you make. Remove sim card and place back in Fold4. If problems with what you have done whilst using sim card use the Restore feature in Backups. Review opening settings as your sim card may have brought across changes you made while sim was in Fold3
