What do you like doing in your spare time? cheap aricept The five operators that agreed to the principles include the four major national carriers and the next largest provider that isn't being absorbed by a major carrier. Leap Wireless, which has been an independent prepaid carrier, is in the process of being acquired by AT&T. The CTIA recommended that the standards be incorporated into the CTIA Consumer Code for Wireless Service, under which the organization annually certifies mobile operators.