Yes you can. With a T-Mobile ONE or Simple Choice postpaid plan you get unlimited international texts for free, international calls from Europe are 20 cents a minute.
Streaming video and music will not count against your high-speed data bucket because there is no data bucket! Data Stash does not work outside North America (USA, Canada, Mexico).
Go to http://www.t-mobile.com/optional-services/roaming.html to see a map showing where our roaming partners are located.
You must have a device with a compatible frequency for the country they are traveling to for their device to function. Most recent smartphones are quad-band, and support frequencies in almost any country. To confirm your device’s compatibility, go to http://www.t-mobile.com/optional-services/roaming.html, enter the country to which you are traveling, and your device model to see if your device is compatible with the frequency in that country.
As a T-Mobile customer you will enjoy free messaging and texting all flight long, plus a full free hour of Gogo Wi-Fi on your smartphone on all Gogo-equipped domestic flights.
Go to http://www.t-mobile.com/offer/free-in-flight-wifi-texting-uncarrier to check out how you can get an hour on us.