If you are a Sprint customer in San Diego then get yourself ready for some super-fast EV-DO Rev. A lovin’ as the carrier has rolled out the upgraded 3G service in your home town. Sprint promises to upgrade 20 cities to Rev. A by the end of the year and the entire network by the third quarter of next year. The new wireless broadband service won’t come cheap with a month to month plan of $79.99 or $49.99 monthly with a two year agreement.