Share your experience!
Hi xperianz,
Have you ensured the volumes are all turned up under Settings > Sound > Volumes? If you have and the volumes are set to max then perhaps try the following: Go into the Phone app and dial *#*#73556673#*#* as you may have accidentally put the phone into demo mode. Try this and let us know whether or not this has worked.
xperianz okay that means your phone was not in demo mode. In this case, I advise contacting Sony Xperia Customer Care in your region as soon as possible to have the phone inspected. You can find contact details for your team by clicking the link in my signature.