Cellular phone rental

* Shared Technologies Cellular has been named the sole cellular phone rental provider for the U.S. Olympic festival '95, which will be held in Colorado Springs, Colo., and Denver July 21-30. STC will provide cellular phones to journalists, Olympic participants and attendees. Reservations can be made through STC's national reservations system to ensure availability. (Sean Hayes, Shared Technologies Cellular, 203/258-2476.)