North America

Canada (Fido, Rogers Wireless)
USA (AT&T (Cingular Blue), Orange (Cingular Orange), T-Mobile, Airadigm, Cellular South, Cincinnati Bell, Conestoga Wireless, Cricket, Hickory Tech, Iowa Wireless, Midwest Wireless, NPI Wireless, Suncom, United States Cellular)
Mexico (Movistar, Telcel)

Central America

Ecuador (Porta)
Panama (Movistar)
El Salvador (CTE Telecom Personal, Digicel)
Guatemala (Comcel, SERCOM, Telefonica (Telefonica Moviles))
Honduras (CelTel)

South America

Argentina (Movistar, Personal)
Bolivia (Nuevatel)
Brazil (Claro Digital, Nextel, OI/TNL, TIM (TIM Brasil))
Chile (Telefonica (Telefonica Movil))
Colombia (Ola, Comcel)
Venezuela (Digitel, Movistar)

Europe

Austria (3 (3AT), A1, One, T-Mobile, Tele.ring telekom, Mobilkom)
Belgium (Mobistar, Proximus, BASE, Scarlet, Telenet)
België (Mobistar, Proximus, BASE, Scarlet, Telenet)
Switzerland (Orange, Sunrise, Swisscom)
Czech Republic (All)
Germany (T-Mobile, E-Plus, Vodafone, O2, Viag, Debitel, Talkline, Mobilcom, The Phone House)
Denmark (3 (Hi3G), Debitel, Orange, Sonofon, TDC Mobil, Tele2, Telia, Telmore)
Estonia (Tele2, Elisa, EMT)
Spain (Amena, Movistar, Vodafone)
Finland (Saunalahti, DNA, Elisa, Sonera)
France (Bouygues Telecom, Orange (Orange France), SFR)
United Kingdom (Orange, Vodafone, Virgin Mobil, T-Mobile, O2)
Greece (All)
Hungary (Pannon, T-Mobile, Vodafone)
Ireland (Meteor, O2, Vodafone)
Italy (TIM, Vodafone, Wind)
Luxembourg (Luxgsm, Tango, Vox Mobile)
Lithuania (Bite GSM, Omnitel, Tele2)
Latvia (Tele2, LMT)
Netherlands (KPN, HI, Vodafone, Orange, T-Mobile, Telfort)
Norway (Telenor, Netcom)
Poland (T-Mobile (ERA), Vodafone (Polkomtel), Orange (Centertel))
Portugal (All)
Romania (All)
Sweden (Tele2, Comviq, Telia, Vodafone, Three, Djuice)
Slovakia (Eurotel, Orange)

Middle East

United Arab Emirates (Etisalat)
Bahrain (Batelco)
Israel (Cellcom, Orange, Pelephone)
Iraq (All)
Jordan (Fastlink, Mobilecom)
Kuwait (MTC (Wataniya))
Lebanon (Alfa, MTC (Touch))
Palestine (Palcell)
Qatar (Qtel)
Syria (Spacetel, Syriatel)
Yemen (Spacetel (Spacetel Yemen))

Africa

Morocco (Maroc Telecom, Meditel)
South Africa (All)
Egypt (ECMS MoBiNil, Vodafone, Misrfone)

Asia

Indonesia (Telkomsel, ProXL, Satelindo, Indosat M3)
Hong Kong (CWHKTCSL, Hutchinson, New World, Peoples Telecom, Smartone, Sunday)
Malaysia (All)
Russia (Smarts, Joust, BeeLine, Megafon, MTS, Tele2, Motiv, ReKom, Indigo, USI, Bajkal, NTS, Kyivstar)
Ukraine (KyievStar, MTC (UMC), Juice, Jeans)
Singapore (All)
Thailand (DTAC, AIS, Orange)
Taiwan (Taiwan Cellular, Chungwan Telecom, FarEastone)

Australia

Australia (3, Optus, Telstra, Vodafone)
New Zealand (Vodafone)