If you’re like most people, you probably have a Yahoo phone number. But if you don’t, there are a few things you can do to change it. First, go to your Yahoo account and sign in. Then click on the “My Account” link at the top of the page. Under “Phone Numbers,” click on the “Change Number” button. Next, enter your new number into the form provided and click on the “Submit” button. You’ll be asked to confirm your new number before it’s added to your account. Now that you’ve changed your Yahoo phone number, be sure to keep it updated by visiting your account page and clicking on the “My Account” link at the top of the page. You’ll see a list of all of your current phone numbers and their corresponding email addresses. Click on one of them and you’ll be able to use that number for now (but remember that it will be replaced by your new Yahoo phone number when you log in again).

How to change phone number in yahoo mail?