Wirelessly posted (Nokia 6310i: Nokia6310i/1.0 (7.00) Profile/MIDP-1.0 Configuration/CLDC-1.0 UP.Link/6.2.3.15.0)

You can remove the phone app in application loader. Keep in mind you will not be able to make emergency calls. If you were on GSM i would suggest using your FDN list. Alas, CDMA, what can you do...