Wireless giants

•AT&T

Headquarters: Dallas

Employees: 266,590

Wireless subscribers: 96 million

Annual revenue from wireless services: $58.5 billion

•T-Mobile

Headquarters: Bellevue, Wash.

Employees: 37,795

Wireless subscribers: 34 million

Annual revenue from wireless services: $21.3 billion

•Verizon Communications

Headquarters: New York

Employees: 194,400

Wireless subscribers: 94.1 million

Annual revenue from wireless services: $55.6 billion

Source: AT&T, T-Mobile, Verizon