Network Covrage
| Country | Network |
|---|---|
| Bermuda (+1441) | CellularOne Cingular (Digicel) Mobility (M3 Wireless) |
| Bhutan (+975) | B-Mobile |
| Bolivia (+591) | Entel Nuevatel Telecel (Millicom) |
| Bosnia-Herzegovina (+387) | BH Telecom (GSMBIH) ERONET/HPT RS Telecoms |
| Botswana (+267) | Botswana Telecommunications Corporation (BTC) Mascom Wireless Orange (Vista) |
| Brazil (+55) | Brasil Telecom Claro CTBC Celular Nextel Oi (TNL, Telemar) TIM VIVO (Movistar) VIVO Minas (Telemig, Amazonas) |
| British Virgin Islands (+1284) | Cable and Wireless CCT Digicel (BVI) Limited |
| Brunei (+673) | B-Mobile DataStream Technology (DTSCom) |
| Bulgaria (+359) | Cosmo Bulgaria Mobile (Globul) MobilTel AD VivaTel |
| Burkina Faso (+226) | CELTEL TELECEL TELMOB (Onatel) |