Not receiving email on your mobile device
When you're not receiving email on your mobile device, there are measures you can take to fix the issue. The first thing we recommend is to check your email on a computer and see if there are any new emails. If you're getting emails on a computer but not in your mobile web browser, try these fixes.
Check Yahoo Mail on a computer - If email isn't arriving at all, the issue isn't with your mobile device, it's with your account. Check your account to fix common receiving problems that cause this.
Troubleshoot Yahoo Mail app on mobile devices
If you're getting email on a computer but not in the Yahoo Mail app, try the following.
When an email app on your phone is not up to date with the latest version it may fail to connect to our servers and emails will stop showing up on your email app. Make sure you are using the latest version of Yahoo Mail, grab the latest version in your device's app store.
Sometimes the connection between the app and your account is lost. Sign back in to reconnect.
At times, reinstalling a fresh version of the app can resolve your receiving problems.