Network Covrage

Country Network
US Virgin Islands (+1340) AT&T
Centennial Puerto Rico Operations Corp 0.035 0.8
Sprint Spectrum L.P.
USA (+1) AT&T Blue (text only)
AT&T Orange (Cingular - text only)
Cellcom (text only)
T-Mobile (text only)

and soon:
Alltel (text only)
Bluegrass
Boost
Centennial (text only)
ECIT (Cellular One of East Central IL)
Farmers Wireless (text only)
Immix (Keystone)
IVC
Nextel
PACE
Silverstar
Sprint
US Cellular (text only)
Verizon (text only)
Virgin
West Central (text only)
Uzbekistan (+998) Buztel
Coscom
DAEWOO (Unitel)
JV Uzdunrobita
Uzmacom
Vanuatu (+678) Digicel
Telecom Vanuatu (SMILE)
Venezuela (+58) DigiCel
Digitel
Infonet
Movilnet
Movistar (Telcel)
Vietnam (+84) Mobile Telecom Services
Viettel
Vinaphone (VTS)
Yemen (+967) HiTS-UNITEL (Y)
MPC (Sabafon)
MTN (Spacetel)
Zambia (+260) Cell Z (Zamtel MTS)
CelTel (Zain)
MTN (Telecel)
Zimbabwe (+263) Econet
NetOne
Telecel (P+T Corp.)