Set up a new phone number or number to receive your Account Key

Set up a new phone:
1 Install the Yahoo Mail application.
2 Open the app and touch Sign in.
3 On the login page, enter your user name and click Continue.
4 View the message sent to your old phone.
5 On your new phone, confirm the code and click Sign In.
6 Can not access my old phone:
Use a desktop computer to send your Account Key to your alternate email.
1 Access the Yahoo login page.
2 Enter your email address Click Next.
       . Change Yahoo password
       . Yahoo sign up
       . Yahoo Login
3 Click I do not have access to this phone, and you'll see your alternate email.
4 If the email is correct, click Yes, send me an Account Key.
If you do not use your old phone again, sign out of the Yahoo app you are using.
Set up a new phone number:
If you receive a new phone number but still use the same phone, follow the steps below.
1 Log in to your Account information page and click on your existing number.
2 Click Add a recovery phone number.
3 Enter your new phone number.
4 Click Send SMS.
5 Touch or enter the verification code to confirm.
6 Click Verify.