Next week, all of T-Mobile's U.S. customers will be able to call folks in Canada and Mexico -- and make calls while traveling there -- without any extra fees.

Thursday's announcement of "Mobile Without Borders" is the latest round in T-Mobile's "uncarrier" strategy, which aims to make the company the populist, customer-friendly cellular company.

It tackles a big annoyance in the cell phone world: varying fees whenever you make calls (to or from) across the border.

T-Mobile CEO John Legere stated that "We've just created one gigantic country in North America. This is about creating a continental experience. The communication across borders should be seamless."

The new T-Mobile (TMUS) policy starts Wednesday, July 15 and will be available to U.S. customers on its unlimited call, text and data plan, Simple Choice.

Americans make 35% of their international calls to Canada and Mexico, according to the company, and those countries account for 55% of American international travel. For more, check out the full CNN report here.

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