Can someone please tell me why my a5 2017 as stopped locking and unlocking with its flipcase
Are you using an official Samsung case @Simong54 ?
When a case is fitted there are sometimes settings that then show in the phones settings in accessories section.
If not can you either try the case on another phone or try another case on your phone.
Daily Driver > Samsung Galaxy s²⁴ Ultra 512Gb ~ Titanium Black.The advice I offer is my own and does not represent Samsung’s position. I'm here to help. " This is the way. "