Q: my iphone6 is stuck in headphones mode

Hi econorail,

Thank you for using Apple Support Communities. 

I understand that your phone is acting like the headphones are still plugged in and you are not able to hear from the receiver. You can take a look at the following article for troubleshooting steps to sort out the issue. 

If you can't hear a person on a call or voicemail or if the sound quality is poor on iPhone - Apple Support

Regards,
Jeff D.