PerthMerc

HI i just bought a 2007 model SLK 280 with all the extra's which includes the in car phone cradle and internal system that connects your phone through the steering wheel and internal computer system! however when they ordered the cradle for my phone they neglected to tell me the in car system will only work on the old 2G phone network. I am with 3 which is on the 3G network as is telstra now as well! does anyone know how i can use my phone on a 3G network through the in car Cradle and computer system!