Log into www.smartmls.com and click on the Edit button (next to My Profile).
Make sure the Personal tab is highlighted (in blue) at the top of the screen, then go to the Contact Information section and add or update your phone number(s)
Click on the Preferred Phone Number field and select the phone number you want to appear on your listings (Office, Direct Work Phone or Cell Phone) from the drop down menu.
Once you have completed your edits, click the green Update button at the bottom of the screen.
Any changes take approximately 15 minutes to appear on Matrix.