Roaming Zone
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Codes & Tools for Using Wireless Away from Home & Out of the Country






Mobile Network Codes (MNC)
International Roaming





Travel SIM's
Prepaids That Roam





Wireless Roaming Guide
Global Wireless Roaming Guide
Know Before You Go:
Roaming Rates
Wireless Roaming Rates
Costs and packages available for roaming outside the US for the top wireless carriers and Prepaids.
Prepaids that Roam Globally
Prepaid Phones that Roam Outside the US
Some US-based prepaid phones can roam outside the US. Most are limited to Mexico and Canada, but there are a few that will work outside North America. In most cases, prepaid phones can also access Data, Calls & Texts through Wi-Fi, or insert a foreign SIM. Also, see if your phone support eSIM's.
Foreign SIM's
Travel SIM: Your Lightest Travel Accessory
Get one 
here in the Roaming Zone. They may also be available at the airport or at a kiosk in a foreign city. Get one for your phone so it will enjoy the trip, too!
Wi-Fi Calling
Wi-Fi Calling
It's the ultimate form of foreign wireless roaming, if your phone and plan supports it. With Wi-Fi Calling, your phone acts just like it's at home and you can make and receive Texts and Calls and use Data without additional charges. Wi-Fi is now available in almost all of the developed world.
Wireless Roaming on a Cruise Ship
Roaming on Cruise Ships
While cellular roaming on cruise ships is now common, it can be very expensive.  There are ways to control your costs and still stay in touch, both in port and at sea.
Mexico Roaming
Roaming Numbers: If You're Ready for Trouble, You Won't Have Any
You know how this works, have these numbers in your phone, on paper or in your computer, and you can find help for any situation.  But if you forget one, that's the one you'll need!
Mexico Roaming
The Checklist: Pack Your Socks and Your Roaming Know-How
If you have a checklist for your clothes, now you've got one for your roaming. Just don't forget your phone.
Mexico Roaming
Roaming in Mexico
US phones that roam in Mexico without extra charges are quite common, even with Prepaid.
Global Roaming
Roaming in Canada
Some US phones roam in Canada, including Prepaid. You can also purchase a Canadian phone or SIM.
Cuba Roaming
Roaming in Cuba
Most US phones will roam in Cuba but there are several limitations and costs may be significant.
Caribbean Roaming
Roaming in the Caribbean
Most US phones will roam automatically in Puerto Rico and the US Virgin Islands. A few plans do not roam for Free in those territories so check before you go. Other areas of the Caribbean have the same restrictions as other foreign countries of the world.

Roaming Codes
Roaming Codes:
SID List
Mobile Network Codes
Used to identify cellular networks worldwide. Our list includes North America wireless MNC's.
SID List
The SID List
System ID's: Codes used by cellular systems to identify the wireless carrier and for the wireless device to determine its roaming status.

Roaming Zone Resources: