AT&T said it has partnered with Canadian mobile operator Rogers Communications to offer international LTE roaming to its US-based customers.

The carrier said that it has a broad selection of LTE devices and about 42 percent of its postpaid smartphone customers use LTE handset. AT&T's customers traveling to Canada can now use their existing LTE device to surf the web, download apps, upload content and more on Rogers LTE network.

"Our agreement with Rogers affirms our commitment to deliver superior international coverage to our customers," said Bill Hague, executive vice president, International, Alliances and Integrations, AT&T Mobility. "AT&T customers already have access to the nation's fastest, most reliable 4G LTE network while in the United States and now they can enjoy LTE speeds while roaming in Canada."

Rogers LTE delivers one of the fastest download speeds in Canada, which will enable AT&T customers to stay connected while traveling outside the U.S. The network reaches 70 percent of Canadians and is also expanding continuously.

To get Rogers LTE in Canada, AT&T customers have the option to select from one of three Data Global Add-On packages that offer discounted rates in Canada and also over 150 countries. For $30 per month, you'll get 120MB of data, $60 per month will get you 300MB, and for $120 per month will get you 800MB of data. Both Rogers and AT&T use frequencies in the 2100MHz band for LTE.

AT&T is expected to launch international LTE roaming in more countries in the near term; however, the carrier has not given any details of the same. AT&T is not the first carrier in the world to offer international LTE roaming. Earlier this year, TeliaSonera also launched LTE roaming for its Danish customers visiting Sweden.

AT&T's rival Verizon Wireless is also expected to offer international LTE roaming in the first half of 2014.

AT&T's shares were down 0.32 percent at $34.58 during mid-day trading on the NYSE on Tuesday.