Cellco Partnership, doing business as Verizon Wireless, is the largest mobile telecommunications network and wireless phone provider in the United States. The network has 102.2 million subscribers as of Q4 2010, ahead of the second largest carrier, AT&T Mobility, which had 95.5 million subscribers as of Q4 2010.
Headquartered in Basking Ridge, New Jersey, the company is a joint venture of U.S. telecommunications firm Verizon Communications and British multinational mobile network operator Vodafone, with 55 and 45 percent ownership respectively. On January 9, 2009, Verizon Wireless acquired Alltel Wireless in a deal valued at $28.1 billion. The acquisition expanded Verizon’s wireless network.