I just purchased the wife a 2005 GX470 with Nav./Bluetooth. She now wants a new cell phone to take advantage of the Bluetooth feature; our current cellular provider is Cingular. The Lexusletstalk website only recommends the Sony Ericsson T637 phone. Bluetooth is new to the GX but I hope some of you LX owners can tell me, which phones work with Lexus Bluetooth other than the Sony?