I had 3 different VM phones & I wanted my old phone number removed from before selling. You have to take your phone number off yourself. To remove your number dial # # 847446 and then # for some phones or OK for others. Scroll down to EDIT. You can put all zeros for the number I didn't change the MSID # but you can put zeros if you want. One of my phones wouldn't take the zeros so I just made up a phone number. Then you press OK or Done. Your phone should automatically restart. You can check under phone information which should be under tools & settings, settings, phone information, my number. You should be able to verify your changes.