She went to the Phone app > Settings (three dots) > Blocked Numbers and looked for any unfamiliar 800-numbers or short codes. On iPhone: She checked Settings > Phone > Blocked Contacts .
Sometimes, a call is blocked because the system detected a "security violation." This can happen if: You tried to use or 3-Way Calling . The call was transferred or put on speakerphone. There were long silences or "suspicious" background noises. how to unblock a prison call
Carriers often flag correctional facility numbers as "Scam Likely" or "Potential Spam." Not Getting Calls? - Colorado Department of Corrections She went to the Phone app > Settings
Alternatively, call their customer service at if you have exceeded spending limits or have a new number that needs verification. Global Tel Link (GTL) / ViaPath : how to unblock a prison call