iPhone X, "Hey Siri" does not work with headphones
I recently switched to the iPhone X from an iPhone 7 plus. One issue that I've run into is that my iPhone X doesn't seem to listen to my wired headphones' microphone for "hey Siri". I don't think it's an issue with the IOS 11 software as it worked fine on my iPhone 7 Plus with that version. Is this a known bug that's exclusive to the iPhone x?
iPhone X, iOS 11.1