As a person who have traveled to more than 6 different countries in the last 6 months, I can tell you which U.S. carriers are the best for getting data and voice overseas.
Before I begin, I have service on all 4 major U.S. networks including AT&T, Sprint, T-Mobile, and Sprint. I also have an account with Google’s new Project Fi. Why so many networks? That’s what I do for a living, test all the networks and find the best for you guys and I am always “high” on Android.
Without a doubt in my mind, the best U.S. carrier for traveling overseas is T-Mobile. T-Mobile provides free unlimited 2G/Edge data and 20 cents per minute in most countries and they support over 140 countries. If you take a look at other carriers, they will charge you ridiculously large amounts for international data. Although not even 3G, with T-Mobile you will get unlimited 2G data which works fine for low-bandwidth apps like e-mail, Twitter, Facebook, Installation, etc…etc… At least no matter what country you go, you will always have quick access to your communication apps. Now you won’t be able to stream videos or anything that requires more bandwidth but you can leave those upto your hotel WiFi or grab a prepaid SIM in the target country. I was able to get full signal in Canada, Ireland, France, Spain, South Korea, and Thailand which are the countries I traveled to this year.
Also, T-Mobile offers WiFi calling overseas. So long as you have WiFi connection, you don’t have to pay 20 cents per minute but it will be as if you were making calls within the U.S. If you have unlimited plan, this will means free calls so long as you have WiFi. Also, you will be able to use your U.S. number for incoming and outgoing calls. If you call your friend in the U.S. your friend will see your U.S. number as caller ID. If someone calls you on U.S. number, you won’t miss those important calls. If you have automated banking service that verifies you through caller ID, no problem.
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