Chicago-based U.S. Cellular, a cellular service provider, said today that it has rolled out a new navigation system for cell phone users. The new system is powered by Aliso Viejo-based Networks In Motion, and provides turn-by-turn directions for GPS enabled cell phones. Networks In Motion develops location-based services (LBS) used to provide services to cell phone users. Details of the deal were not disclosed. U.S. Cellular said that the navigation service will be available for $9.99 per month or $2.99 per day to its subscribers. Networks In Motion is backed by Mission Ventures, Redpoint Ventures, and Sutter Hill Ventures.