Website:

1. Login to Starlink Account
2. Select the 'Pencil Icon' next to Phone, (left side of page)
3. Enter new phone number
4. Select "Save"

Starlink App:

1. Select the 'Person" icon
2. Click on your name
3. Select the pencil icon next the the "Phone" section
4. Enter your new phone number
5. Select "Save"

Note: If you are performing this action on the app, and recieved an error, this may mean your app version is outdated. Make sure you have updated to the latest version of the app, or try again in your account on Starlink.com in a browser.