iPhone 5S earbuds remote not working
I have an iPhone 5S running i0S 8.1.3.
I often use the remote/mic on my earbuds to activate Siri, but suddenly I am unable to get the phone to respond when I press the remote/mic button. I can hear music/phone calls just fine but the button doesn't do anything. I also cannot adjust the volume of music, videos, etc. unless I use the buttons on the phone itself. I have two spare sets of earbuds and all of them are doing the same thing, which leads me to believe there's something wrong with the phone. Anyone else ever have this issue?
Thanks.
iPhone 5s, iOS 8.1.3