AT&T is expanding their 3G network along the CTA system, including the subways, and is in the final stages of network upgrades. Some customers in some subway locations may already be able to make phone calls, send email and share data with their AT&T devices while on CTA trains, even while underground.
AT&T becomes the fourth wireless provider to offer service in the subways, after Cricket Communications, Verizon Wireless and U.S. Cellular.
AT&T entered a 10-year contract to lease the wireless infrastructure installed by CTA. The venture is expected to bring the CTA $3.1 million in revenue over the life of the contract.