Share your experience!
i too am facing the audio problem previously there were no issues at all. If i use headphones then my phone speaker doesn't work i have to restart the phone & vice-versa. I am facing this issue from past 7 days.
help me out with this issue.
I suggest that you try to update/repair the phone software using PC Companion:
http://www.sonymobile.com/update
If the problem still persist you should have the phone examined at a service center. Please contact your local support for more info: