The Oppo-Smartphone offers the possibility to reject unknown callers automatically, meaning that if the phone number is not saved as a contact, the call is automatically rejected.
The function also offers as an exception, if the same caller within 3 minutes again, it is not blocked.
- Open the Phone-App
- Open the Menu
- Tap on Settings
- Tap on Set Rules
- Tap on Block calls
- Enable or Disable Block calls from private numbers
- Confirm with Turn on