Now that Cellular One from Dobson Cellular Systems has joined AT&T, we can deliver an even better customer experience to all our wireless customers - including the roughly 1.6 million Cellular One/Dobson subscribers in rural and suburban areas. Cellular One customers now have access to the largest digital voice and data wireless network in the U.S., the fully-integrated AT&T GSM network. This network covers more than 284 million people in 13,000 cities and towns. Most importantly, if you're a Cellular One customer, you probably don't need to change a thing (if you do need to take action, we will contact you directly). However, you do have more options, and you may chose to take advantage of the new AT&T phones and calling plans now available to you.