Wireless services account for 75% of Verizon Communications' total service revenue and nearly all of its operating income. The firm serves about 93 million postpaid and 20 million prepaid phone customers via its nationwide network, making it the largest US wireless carrier. Fixed-line telecom operations include local networks in the Northeast that reach about 30 million homes and businesses, including about 20 million with the Fios fiber optic network. These networks serve about 8 million broadband customers. Verizon also provides telecom services nationwide to enterprise customers, often using a mixture of its own and other carriers' networks. Verizon agreed to acquire Frontier Communications in September 2024.