| Afghanistan | MTN |
| Australia | Telstra, Optus, Vodafone |
| Belgium | Proximus/Belgacom, Mobistar |
| Cyprus | MTN |
| Czech Republic | O2, T-Mobile |
| Denmark | Telia |
| France | Bouygues, Orange, SFR |
| Germany | Vodafone, T-Mobile, E-Plus, O2 |
| Greece | Cosmote |
| Guinea-Bissau | MTN |
| Hong Kong | HK CSL |
| Hungary | Pannon |
| Iran | MTN-Irancell |
| Ireland | Vodafone, O2, Meteor |
| Israel | Cellcom |
| Italy | TIM |
| Japan | NTT DoCoMo, KDDI Research Institute |
| Jordan | Zain, Umniah |
| Netherlands | KPN, T-Mobile, Vodafone |
| Nigeria | MTN |
| Norway | Telenor, NetCom |
| Poland | Polkomtel, Orange |
| Portugal | TMN, Optimus |
| Russia | Megafon |
| Singapore | SingTel |
| South Africa | MTN, Vodacom |
| Spain | Telefonica Moviles, Vodafone |
| Swaziland | MTN |
| Sweden | TeliaSonera |
| Switzerland | Swisscom, Orange, Sunrise |
| Taiwan | FarEasTone |
| Turkey | Turkcell |
| UK | Vodafone, Orange, T-Mobile, Virgin Mobile |
| USA | Verizon, DoCoMo Communications Laboratories |
| Yemen | MTN |
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