You can set up the screens provided when running the phone app.
If you block numbers in the Phone or Messaging apps, all calls and messages from blocked numbers will be blocked.
How to opt out of settings
- Select Add number in 'Settings>Networks>Call>Call blocking&Decline with message>Blocked>Select '+''
Note: You can not check a phone call that is received from the Android 7.0 Nougat OS version on the receiving block number. Receiving Blocked messages can be checked in the message settings under "message settings > Message blocking > Blocked numbers"