Earphones not supported

Hi,

I bought a pair of apple wired earpods with the lightening connector to use with my iPhone 8. However, when I plug the earphones in my phone nothing happens; the sound still plays through my phone so I assume the earphones aren't connected/supported. I didn't even get a "these earphones aren't supported message until I tried to toggle a setting in headphone audio - "custom audio setup". On the other hand, these earphones work perfectly fine when I plug them into my ipad....How is that so. And yes, I've tried to whole "Check for debris, damage, or loose connections" and nothing...plus my charger works so that can't be it.