When you turn this off, you will receive all calls—including spam. But you will also finally see every private/blocked number come through.
If you have verified your device settings and carrier options but private calls are still being blocked, a third-party application is likely intercepting your calls. how to unblock private calls
Open the specific caller ID or anti-spam app installed on your phone. When you turn this off, you will receive
In North America, many major carriers allow you to toggle network features using star codes directly from your dialer pad: When you turn this off