If the number isn’t listed, tap Block list > Add from Contacts/Logs only adds – use method 3 to find it.
Tap (or the three dots) at the bottom or top of the screen. Select Unblock contact or Unblock number . 3. Unblock via the Samsung Messages App unblock a number on samsung
Alternatively: Settings → → More privacy settings → Caller ID and spam protection (only for Google Dialer). If the number isn’t listed, tap Block list