Unknown Call Blocker

Rejects Unknown calls which are not in contact list.

Rejects calls from unknown number.

If number is not in Contact List, then this app will reject call automatically.

Functionality can be turned on/off as per requirement.

To work it needs Contacts permission, to check whether particular number exists in Contact list.

To give permission, Go to Settings->Apps->Call Reject and give required permission.

Except Android Version 28, it works in all version.