1) The 1 key can also be used to retrieve voicemail messages. Just press and hold it until it dials your voicemail.
2)Press Menu--->Settings--->Phone Status--->My Tel. Numbers. Highlight the top one and press View.The same key should now say Edit. Press that, and you will be able to change the number.
3)Do you have your one touch dialing set to
SIM or phone memory? If your contacts are stored to your
SIM card, then one touch dialing needs to be set to
SIM. If your contacts are stored to the phone memory, then your one touch dialing needs to be set to phone memory. You can change these settings through Menu--->Settings--->Initial Setup--->1-Touch Dial.
Good luck, and I hope this info helps you.