Hi Stevio1979,
It sounds like after you tried to connect your wired headphones to your iPhone your device thinks they are wireless and Bluetooth, not wired with a direct connection. Headphones offer a great alternative to listen to audio on your iPhone without interrupting others. We're glad you reached out for help.
Take a look at the resource below for help when your headphones are not working.
If your headphones don't work with your iPhone, iPad, or iPod touch
If you still have issues with the connection reach back out to the community with more information about the type of headphones and what you see when you connect them.
Have a good day!