iPhone 7 won’t accept headphones

My IPhone 7 will no longer recognize that I have Earbuds plugged in. I have restarted the phone a couple times, but no change. It‘s not the headphones, I‘ve tried them on another Apple device and they just worked fine. The sound will continue to come out of the loudspeaker instead of the earbuds. I have googled a long time to find solutions but none of them work. Any ideas?