are you currently unable to access the yahoo account on the android phone? Here are the guide to solve such errors. you may apply it on your devices.
1. First of all, you need to update the user id and password for your yahoo account on the android phone.
2. If yahoo mail is not receiving emails on the android phone. you should check the auto fetch settings. you may turned off the syncing settings. that's why it is not working on the devices.
3. Sometimes, users can't sign into yahoo mail on android phone due to the technical problems on the mail application. so you should remove the uninstall the mail app. and then reinstall the app.
4. Besides this, you need to check the internet settings too.