Security

[kannan636]

There is no security in samsung m31s. I am unable to lock apps. Particularly whatsapp and facebook.

[Alphonsokurukuchu]

Install S secure made by Samsung available in galaxy store

[Strangeneria]

You can download S secure from galaxy store
https://apps.samsung.com/appquery/appDetail.as?appId=com.samsung.android.app.sprotect&cId=0000046374...

[Dr_Interchupipi]

Knox

[SidharthVardhan]

S Secure stands for sub-standard security. Anyone can delete S Secure leaving your apps vulnerable. Regarding whatsapp, use inbuilt app lock - it has one in its settings.