Says my earphones are plugged in but i haven't plugged in anything

I haven't dropped my phone in water or I haven't dropped it! I woke up today and it says earphones are plugged in but there not. I have tried restarting it that didn't work I tried resetting it to factory settings and that didn't work. Is there anything else I can try?

Welcome to Android Central! Which phone? Use a can of compressed air to blow out the headphone jack, and a toothpick to root around -- any debris in there?