Secure folder

[MarsSubash]

In samsung galaxy m31  not compatible with secure folder app but it only on samsung galaxy a30 has inbuild secure folder feature so please update this feature

[Lekshmanan]

Need Knox Security Compatible !

[Sid_Karna]

Because it's a M series device and the other one is A series.
Nb: A30 is overpriced with relatively lower specs because of these software features.

[Sidhabhi]

M31 lacks knox security and that's why secure folder is not available

[Ashwinash]

Not available for m31 bro . . I think you can use S secure app