Xperia Z2 headphone jack in phone doesnt work

[Mlitat1]

My headphones don't working on my z5 premium. I have tried many things and nothing change. Somebody told me to install sound about and partially working while playing media. But, it's little bit annoying to switch every time I want to listen music.do Sony has a particular solution????? 

[NeoBeum]

I purposely filed my 3.5mm socket with water a month ago to do some testing.

It took a few hours to start manifesting problems and then a day to fix.

Do you have Sony Smart Connect and Sony Smart Key apps?

For Smart Connect, delete every entry and device associated, and also delete all events. Clear the cache and restart the phone.

Let me know what errors pop up.

Also, go to main settings » Apps 

show system apps, and then look for "Unsupported Headset Notifier"

How much storage space is it reporting in use? 16.0 kb ... 0.0 kb or something else?