There can be many reasons of Yahoo not receiving emails. There might be some settings error, improper log in. Sometimes you find Yahoo deleted all my emails. That may be because you have enabled the setting of automatic delete emails. You can go to the settings and uncheck the box beside that and change it to manually delete option. If you still find, why am I not receiving yahoo emails on my iPhone. Here are some steps you can follow.
How to fix Yahoo mail in iOS?
· Make sure your operating system is updated. Apple usually updates the device and fix any issue it might be facing.
· Remove the option of re add Yahoo mail to iOS mail.
· For proper working use the Yahoo mail app.
· Uninstall the Yahoo application and then reinstall it.