If you’ve been using the same primary phone number on Facebook for years, it might be time to make a change. Here’s how to do it:

  1. Log in to your Facebook account.
  2. Click on the “Account Settings” link in the top right corner of your screen.
  3. Under “Your Profile,” click on the “Phone Number” tab.
  4. Enter your new primary phone number in the “Primary Phone Number” field and click on the “Update Profile” button. ..