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.
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 on mobile devices
If you're getting email on a computer but not in your mobile web browser, try these fixes.
If you're getting email on a computer but not in the Yahoo Mail app, try the following.
If you're not using the current 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.