Does At&t Work Internationally. As the first truly modern media company ATT has been changing the way people live work and play for more than 140 years. Enjoy the broadest global coverage of any US.
Check to be sure you can use your device. In Japan or South Korea a device that can use the. An eSIM is a lightweight solution to getting international data without the excessive fees that some carriers charge and the difficulties of finding a.
The exceptions to the rule are older phones.
ATTs international data plans work in over 100 countries but remember certain countries are only supported by the ATT Passport plan and not the International Day Pass. Most AT. Originally the American Telephone and Telegraph Company is an American multinational conglomerate holding company that is Delaware-registered but headquartered at Whitacre Tower in. Most of ATT phones do work internationally.
