Wireless Operators / Carriers

Enabling Productive Mobility

Cellular One / Dobson Cellular

Cellular One supports the CDMA family of air interface technologies and roaming throughout the US and Canada .

Cingular

Cingular and T-Mobile support the GSM family of air interface technology which is the dominate air interface technology around the world. Such being the case, Cingular and T-Mobile largely blanket the planet. For GSM, North America and South America largely operate in the 800 MHz (cellular) and 1900 MHz (PCS) bands. On most other continents, 900 MHz and 1800 MHz bands are used. A GSM device that supports quad-band (all four bands), will offer the greatest flexibility in supporting international roaming to all of the locations supported by these service providers. Cingular Wireless' HSDPA BroadbandConnect coverage area can be found here . Cingular Wireless GPRS/EDGE data coverage can be found here .

Sprint Nextel

Sprint PCS and Verizon support the CDMA family of wireless air interface technologies. If most of your travel is in North America, South America, Asia Pacific, and the Caribbean Islands , these service providers offer pretty good coverage. Sprint operates in the PCS band and Verizon Wireless operates in the cellular band. Roaming between the two service providers networks is supported provided you have a dual band CDMA device. Sprint Nextel Mobile Broadband and PCS service coverage areas can be found here .

Sprint also supports a technology called iDEN and international GSM bands as a result of its merger with Nextel.

T-Mobile

Cingular and T-Mobile support the GSM family of air interface technology which is the dominate family of air interface technology around the world. Such being the case, Cingular and T-Mobile largely blanket the planet. For GSM, North America and South America largely operate in the 800 MHz (cellular) and 1900 MHz (PCS) bands. On most other continents, 900 MHz and 1800 MHz bands are used. A GSM device that supports quad-band (all four bands), will offer the greatest flexibility in supporting international roaming to all of the locations supported by these service providers. T-Mobiles GPRS and EDGE U.S. network coverage area can be found here .

US Cellular

US Cellular supports the CDMA family of air interface technologies and supports roaming throughout the US .

Verizon Wireless

Sprint PCS and Verizon support the CDMA family of wireless air interface technologies. If most of your travel is in North America, South America, Asia Pacific, and the Caribbean Islands , these service providers offer pretty good coverage. Sprint operates in the PCS band and Verizon Wireless operates in the cellular band. Roaming between the two service provider's networks is supported provided you have a dual band CDMA device. Verizon Wireless' EV-DO Broadband Access can be found here . Both Broadband Access and National Access (1xRTT) coverage maps can be viewed here .

Regional Operators

Regional operators in the US supporting the CDMA family of air interface technologies include Alltel, Cricket Communications, MetroPCS, Midwest Wireless, nTelos, Revolution Telecom,

Regional operators in the US supporting the GSM family of air interface technologies include Cellular One (Dobson Cellular), Centennial Wireless, Cincinnati Bell Wireless, Edge Wireless, SunCom, Unicel (also supports CDMA in some regions).

MVNOs

Mobile Virtual Network Operators do not actually own their own frequency spectrum but operate as a reseller from spectrum owned by other service providers.

7-Eleven (Cingular's network)

Amp'd Mobile (on Verizon's EV-DO network)

Boost (uses Sprint-Nextel's iDEN network)

Disney Mobile (uses Sprint's PCS network)

Earthlink (Blackberry Data)

Mobile ESPN (uses Sprint's PCS Network)

Virgin Mobile (uses Sprint's PCS Network)