How do I activate International SMS Blocking Feature? July 02, 2024 01:11 Updated You can SMS “BLOCKINTSMS” to “1218” to activate the feature Related articles How do I deactivate International SMS Blocking Feature? What is the International SMS Blocking Feature? What happens when I activate International SMS Blocking feature? Are international calls and SMS supported? What happens when I choose not to activate the International SMS Blocking Feature or disable it?