Will I have coverage when I'm traveling?

That depends on where your travels take you. To see where Madstar Mobile has service, check out our coverage map https://madstarmobile.com/coverage

If the country you're traveling to doesn't appear on this list, then they don't use the same kind of network that we do (CDMA) 

and your Madstar Mobile phone may not work there unless your phone can be unlocked for international use.