Phone stuck in headphone mode

I would try using one of the keyboard cleaners to make sure nothing is in the aux port of the device, which is what usually causes this. You can also try a master reset. If neither resolve the issue, I'd make an appointment at the Genius Bar to have them give you options for repair.

You can try firmly inserting and removing a headset a couple of times to see if you can get it "unstuck". However, it will probably require a trip to your local Apple Store.

Thanks Jennifer. Sprayed some in the portend that did the trick! Thanks again.

Note that if whatever you sprayed into the port triggers the liquid contact indicator, you may not be eligible for warranty or out-of-warranty service from Apple.

Thanks Idris. I used AIR, the air dust can type to blow out the port. Everything is fine.