TDS and U.S. Cellular to Present at the Morgan Stanley 11th Annual Global Media & Communications Conference

CHICAGO, May 16 /PRNewswire-FirstCall/ — Telephone and Data Systems, Inc. and United States Cellular Corporation will be making a joint presentation at the Morgan Stanley 11th Annual Global Media & Communications Conference in Washington D.C., on May 23, 2006.

LeRoy T. Carlson, Jr., president and chief executive officer of Telephone and Data Systems, Inc. and Kenneth R. Meyers, executive vice president and chief financial officer of U.S. Cellular will be presenting at 4:15 p.m. ET. Mark A. Steinkrauss, vice president, Corporate Relations, and Nicole J. Schoenberg, communications manager, both of TDS, will also be at the conference.

The presentation will be webcast both live and on-demand. To listen to the webcast on the web, please visit the Company Presentation page of http://www.teldta.com/ at least 15 minutes before the beginning of the scheduled presentation to register, download and install any necessary multimedia streaming software.

About TDS

TDS is a diversified telecommunications corporation founded in 1969. Through its business units, U.S. Cellular and TDS Telecom, TDS operates primarily by providing wireless, local telephone and broadband services. As of March 31, 2006, the company employed 11,500 people and served 6.8 million customers/units in 36 states.

About U.S. Cellular

As of March 31, 2006, U.S. Cellular, the nation’s sixth-largest wireless service carrier, provided wireless service to 5.6 million customers in 26 states. The Chicago-based company operates on a customer satisfaction strategy, meeting customer needs by providing a comprehensive range of wireless products and services, superior customer support and a high-quality network.

Telephone and Data Systems, Inc.

CONTACT: Julie D. Mathews, Manager, Investor Relations, of Telephone andData Systems, +1-312-592-5341, julie.mathews@teldta.com

Web site: http://www.teldta.com/