Most password problems on mobile devices can be resolved with the troubleshooting steps below:

Restart the device: Once the device is completely powered down, remove and re-insert the battery (if applicable) before powering back up.

Verify your password: If you recently changed your password but haven't updated it on your mobile device, make sure that you are using the new password to sign in with.

Check your password capitalization: Some mobile devices will automatically capitalize the first letter when entering text into input fields, which can prevent a successful login. Make sure that your Yahoo! ID and/or password use a lower-case character if necessary.

Check for special characters in your pasword: Some mobile devices can experience compatibility issues with passwords that contain special characters (e.g., $, %, or &, etc.). If your password contains any special characters, sign in using a desktop computer and change your password to something without special characters.

Make sure you're not using "@yahoo.com" in your Yahoo! ID: Your Yahoo! ID is everything that comes before "@yahoo.com" in your Yahoo! Mail address.
Note: If you have "@ymail," @rocketmail.com," or another partner account (e.g., @sbc.com) you'll need to enter your entire email address as your Yahoo! ID.

For Yahoo! mobile webpages, clear your cache and cookies: In your web browser's configurations or settings section, clear the cache and cookies to remove bad, corrupted, or old data saved for Yahoo! mobile webpages. Please refer to your device's operation manual or your web browser app's online help for the exact steps to perform this function as steps vary greatly between devices and browser apps.

If using an app, uninstall then reinstall the app:

• Android device instructions:
  • Uninstalling apps
  • Installing apps
• iOS device instructions:
  • Uninstalling apps
  • Installing apps

If you are receiving the notice to "sign in from a desktop computer" or you have tried the suggestions above without success, please try signing in to the Yahoo! mobile webpage using a desktop computer. If you are able to sign in with the password that you are trying to use on your mobile device, your password is not experiencing any problems.