1. On the handheld Home screen, click the Address Book icon.
2. Select the contact containing the phone number you wish to copy.
3. Click the trackwheel and select View.
4. Select the phone number, click the trackwheel, then select Copy to SIM Phone Book.
5. Click the trackwheel and select Save.
You can also only save one number at a time per contact. If you have a contact with a work, home and cell number, you can only pick one number to save to the SIM. That's why you have to go to each number before the menu shows the "copy to SIM..." option. And forget address information.
Posted from my CrackBerry at wapforums.crackberry.com
