International roaming, calling & texting differences
International roaming is when you use mobile data while in a country outside of your home zone.
International calling and texting is when you make a wireless call or send a text message to a country outside of your home zone, regardless of where you are making the call from (e.g. the US, the country you are calling/texting, or anywhere else in the world).
Here's a great perk: With Pronto, calls and texts to or from your home zone are always free with purchase of a Pronto roaming add-on.