| Country | Zone | Country | Zone | Country | Zone |
|---|---|---|---|---|---|
| Afghanistan | 4 | Germany | 1b | Panama | 5 |
| Algeria | 1b | Gibraltar | 1b | Peru | 4 |
| American Samoa | 3 | Greece | 1b | Philippines | 3 |
| Andorra | 3 | Grenada | 2 | Poland | 1b |
| Anguilla | 2 | Guyana | 3 | Portugal | 1b |
| Antigua & Barbuda | 4 | Haiti | 3 | Puerto Rico | 4 |
| Argentina | 3 | Hong Kong | 2 | Qatar | 3 |
| Aruba | 2 | Hungary | 1b | Romania | 1b |
| Australia | 1a | Iceland | 4 | Russia | 3 |
| Austria | 1b | India | 5 | Saudi Arabia | 1b |
| Azerbaijan | 1b | Indonesia | 3 | Serbia | 2 |
| Bahamas | 4 | Iraq | 3 | Seychelles | 2 |
| Bahrain | 1b | Ireland | 1a | Sierra Leone | 3 |
| Barbados | 2 | Israel | 1a | Singapore | 1b |
| Belgium | 1b | Italy | 1a | Slovakia | 1b |
| Bermuda | 5 | Jamaica | 2 | Slovenia | 1b |
| Bosnia Herzegovina | 1b | Japan | 1b | South Africa | 1b |
| Brazil | 1b | Kazakhstan | 4 | Spain | 1a |
| British Virgin Islands | 1b | Kenya | 1b | Sri Lanka | 3 |
| Bulgaria | 2 | Kuwait | 3 | St Kitts & Nevis | 3 |
| Canada | 4 | Latvia | 1b | St Lucia | 2 |
| Cayman Islands | 2 | Lebanon | 2 | St Vincent & The Grenadines | 2 |
| Chile | 2 | Liechtenstein | 2 | Sweden | 1b |
| China | 3 | Lithuania | 1b | Switzerland | 1b |
| Colombia | 5 | Luxembourg | 1b | Taiwan | 2 |
| Croatia | 1b | Macau | 3 | Tanzania | 1b |
| Cruise Ships (Select Ships Only) | 4 | Malaysia | 3 | Thailand | 3 |
| Cuba | 5 | Malta | 2 | Trinidad & Tobago | 3 |
| Cyprus (South) | 1a | Mauritius | 3 | Tunisia | 2 |
| Czech Republic | 1a | Mexico | 4 | Turkey | 1a |
| Denmark | 1b | Montenegro | 2 | Turks & Caicos | 3 |
| Dominica | 2 | Montserrat | 1b | Ukraine | 3 |
| Dominican Republic | 4 | Morocco | 2 | United Arab Emirates | 1b |
| Egypt | 1a | Mozambique | 2 | United Kingdom | 1a |
| El Salvador | 1b | Namibia | 3 | United States | 4 |
| Estonia | 1b | Netherlands | 1b | Uruguay | 3 |
| Faeroe Island | 3 | Netherlands Antilles | 2 | Us Virgin Islands | 4 |
| Finland | 1b | Nigeria | 1b | Zambia (*) | 1b |
| France | 1b | Norway | 1b | ||
| Gambia | 2 | Pakistan | 3 |
* Service in this country is currently being tested. The service is operational, but outages due to technical implementation are likely. If reliability of service is required, then we recommend purchasing a local SIM card for this country.