I got my phone about a month ago. I updated the software to 4.4.2 kitkat released by sony. It's not rooted. This problem occured yesterday for the first time. When I call someone or someone calls me, the earphone doesn't work. I don' hear anything. When I run earphone test in Service tests, it works fine. The problem is fixed when I reboot the phone. But I can not reboot the phone everytime. It happened once yesterday and next time now. I am so pissed off. This is my first sony phone and so far I am very dissapointed. My audio jack flap is opening by its self and as I can see a lot of people complain about it. I hope this can be fixed