Earphones pause/play/skip function not working
I bought an Iphone 5c about 3-4 years ago that came with earphones. The skip/pause/play function worked fine on the Iphone 5c and my Ipad mini. I recently got an iphone 6 and the pause/play/skip function doesn’t work on the iphone 6 but still functions fine on my iphone 5 and ipad mini. Any ideas to why it isn’t working on the 6?
iPhone 6s, iOS 12