Verizon Wireless operates the nation’s most reliable wireless network. It is the only major carrier with a 30-day network test-drive pledge that pays for calls if a customer isn’t satisfied and switches to another carrier. Headquartered in Basking Ridge, N.J., Verizon Wireless is the largest US wireless company and largest wireless data provider, based on revenues. The company is a joint venture of Verizon Communications (NYSE:VZ) and Vodafone (NYSE and LSE: VOD).