| Country | Carrier/s | Country | Carrier/s | Country | Carrier/s |
|---|---|---|---|---|---|
| Afghanistan | Etisalat | Gibraltar | Gibtel | Paraguay | Claro, Vox, Nucleo |
| Albania | Eagle Mobile | Greece | Wind Hellas, Cosmote | Peru | America Movil |
| Algeria | Djezzy | Greenland | Philippines | Globe Telecom, Digital Mobile/Sun Cellular | |
| American Samoa | Grenada | Digicel | Poland | Polkomtel, Era | |
| Andorra* | Servei De Telecomunicacions | Guam | DoCoMo | Portugal | Vodafone |
| Anguilla | Digicel | Guernsey | Wave | Puerto Rico | AT&T |
| Antigua & Barbuda | Digicel | Guyana | Digicel | Qatar | QTEL |
| Argentina | Claro, Telefonica Moviles | Haiti | Digicel | Romania | Orange, Cosmote |
| Armenia | K-Telecom VivaCell MTS | Honduras | Russia | MTS, RoCC Tele2 | |
| Aruba | Digicel | Hong Kong | China Mobile | San Marino | San Marino Telecom |
| Australia | Telstra | Hungary | Vodafone | Saudi Arabia | Mobily, MTC Zain |
| Austria | T-Mobile | Iceland | Siminn | Senegal | |
| Azerbaijan* | Azerfon, Azercell | India | IDEA, MTNL, Reliance, Vodafone Essar | Serbia | Telenor |
| Bahamas | Bahamas Telecom Co | Indonesia | Hutchison 3, Axis, XL Excelcomindo | Seychelles | Cable & Wireless |
| Bahrain | Batelco | Iraq | Zain | Sierra Leone | Airtel |
| Barbados | Digicel | Ireland | Vodafone, Hutchison 3 | Singapore | M1, StarHub, Singapore Telecom |
| Belarus* | Mobile TeleSystems | Isle Of Man | Manx | Slovakia | Slovak Telekom |
| Belgium | KPN, Belgacom, Mobistar | Israel | Pelephone | Slovenia | Tusmobil |
| Benin | Italy | Vodafone, Hutchison 3 | South Africa | Vodacom | |
| Bermuda | Digicel, M3 Wireless | Ivory Coast | South Korea | SK Telecom | |
| Bolivia | Nuevatel | Jamaica | Digicel | Spain | Vodafone |
| Brazil | Brasil Telecom, TIM CELULAR | Japan | DoCoMo | Sri Lanka | Etisalat |
| British Virgin Islands | Digicel | Jersey | Jersey Telecom | St Barthelemy | |
| Brunei Darussalam | Bmobile | Jordan | Orange | St Kitts & Nevis | Digicel |
| Bulgaria | MobilTel | Kazakhstan | Beeline Kar-Tel | St Lucia | Digicel |
| Canada (**) | Rogers Wireless, Fido, Bell Mobility | Kenya | Airtel | St Martin | |
| Cape Verde | Kuwait | Zain, VIVA | St Vincent & The Grenadines | Digicel | |
| Cayman Islands | Digicel | Latvia | Latvian Mobile | Sudan | Zain |
| Chile | Telefónica Móviles | Lebanon* | MIC - Alfa | Suriname | |
| China | China Unicom, China Mobile | Liechtenstein | Orange | Sweden | TeliaSonera |
| Colombia* | Telefonica Moviles | Lithuania | Tele2, Omnitel | Switzerland | Swisscom |
| Costa Rica | ICE | Luxembourg | P&T Lux | Taiwan | Chunghwa Telecom, Taiwan Mobile |
| Croatia | Tele2 | Macau | SmarTone Mobile | Tanzania | Airtel, Zanzibar Telecom |
| Cruise Ships (Select Ships Only)* | Madagascar | Telma | Thailand | AIS, True Move | |
| Cuba | Malaysia | Digi Telecom, Maxis Mobile | Trinidad & Tobago | Digicel | |
| Cyprus | Maldives | Wataniya | Tunisia | Tunisiana | |
| Czech Republic | Vodafone | Malta | Vodafone | Turkey | AVEA, Turkcell |
| Denmark | Telia Danmark | Mauritius | Cellplus | Turks & Caicos | Digicel |
| Dominica | Digicel | Mexico | Movistar | Uganda | Airtel, Orange |
| Dominican Republic | Claro | Moldova | Ukraine | JSC Ukrtelecom | |
| Ecuador | Monaco | United Arab Emirates | du, Etisalat | ||
| Egypt | Etisalat Misr, Mobinil, Vodafone | Montenegro | M Tel | United Kingdom | O2, Vodafone, Orange, T-mobile |
| El Salvador* | Digicel | Montserrat | Cable & Wireless | United States (**) | T-Mobile, AT&T, Cincinnati Bell |
| Estonia | AS EMT | Morocco | WANA | Us Virgin Islands | AT&T |
| Faroe Islands | Mozambique* | Vodacom | Uzbekistan* | Unitel | |
| Fiji | Digicel | Netherlands | Vodafone | Venezuela | Telcel |
| Finland | TeliaSonera, Elisa, Alands | New Zealand | Vodafone | Vietnam | MobiFone, Viettel |
| France | Orange | Nigeria | MTN, Glo Mobile, Zain | Western Samoa | Digicel |
| Gambia* | Qcell | Norway | NETCOM | Zambia* | MTN |
| Georgia | Geocell | Oman | Nawras, Oman Mobile | ||
| Germany | Vodafone, T-Mobile | Pakistan | Pak Telecom, Warid Telecom | ||
| Ghana | Airtel | Panama | Digicel |
* Enter 2 followed by the PIN in Afghanistan, Albania, Andorra, Belarus, Cape Verde, Chile, Colombia, Fiji, Gambia, Iraq, Lebanon, Liechtenstein, Madagascar, Montserrat, Mozambique, San Marino, Slovakia, Uzbekistan, Zambia