Learn how to block outgoing international calling and texting. If you block these services, you'll still be able to receive international calls.
To block international calling and texting, go to My T-Mobile and log in to your account. Then, go to PROFILE > Blocking and toggle the ON/OFF switch.
To add this to your plan, please contact T-Mobile Customer Service. Keep in mind this service won't block calls to Canada or the US Virgin Islands.
This service does not block outgoing international calls when roaming domestically. All charges are considered valid in this scenario.