Headphones wont connect

[Roo26]

My headphones will not connect to the phone via the adapter. I've tried turning everything off and on again but just isn't recognising anything is connected

[Ysella]

I have this issue for the second time with this phone and its driving me insane. I use my ear buds all the time and I'm getting to the point where I'm going to start using my old Xperia instead. Any answer from Sony would help! 

[RuneJ]

Just to clarify; You try to connect via cable to the USB-port adapter or via Bluetooth?

If via USB-adapter, have you tested with another adapter to see if the adapter itself is the cause.?

Or tested with another /type of headset?

[Roo26]

Connection doesn't work with different headphones or cable (partner has same phone) charges fine through the connection also.