Telecom Américas already has a stake in ATL, a cellular carrier in Rio de Janeiro state.
Alltel, based in Little Rock, has rapidly become the nation's fifth-largest cellular carrier, with six million customers.
Will federal investigators be allowed to retrieve information on your recent whereabouts from a private service like uLocate, or your cellular carrier?
Lucent Technologies said it had won a five-year contract to provide wireless equipment to Cingular Wireless, the nation's second-largest cellular carrier.
The company has not yet disclosed which cellular carrier it has teamed up with, although it says it is either Verizon or AT&T.
I challenged each cellular carrier to send me not its fanciest handsets, but its simplest: models designed for the iconoclasts who still think phones are for talking.
The F.B.I. could ask Verizon, the cellular carrier by which Mr. Farook's phone was serviced, to give the agency more information on the phone.
Changes Out With the Old, In With the Old Some tips for those considering moving their numbers to a new cellular carrier on Nov. 24 or thereafter: Bring in your old bill to the new cellphone service provider.
The GeoVector service was introduced commercially this year in Japan by KDDI, a cellular carrier, in partnership with NEC Magnus Communications, a networking company, and Mapion, a company that distributes map-based information over the Internet.
The strength of those companies matters for the wireless industry because SBC and BellSouth together control Cingular, while Verizon controls the nation's largest cellular carrier, Verizon Wireless, in a venture with Vodafone of Britain.
Only customers who sign up for a messaging service through a telephone or cellular carrier can make their regular phone numbers their message numbers (although many services let users have calls forwarded from their regular numbers to their message services).
