Constant problems on Xperia J

[ausmel]

have been facing severe problems on my xperia phone. Multiple  problems are arising. The touch panel was replaced as the touch was not working but of no use as the problem continued.The motherboard was replaced and then the touch problem stopped .Now the problem is while making outgoing calls, the phone displays goes off as soon as I call and i have to unlock the phone for the display to turn on.The phone doesnt switch off ,only display goes off while making  outgoing calls but the call wont get connected.The service centre people dont know what to do.Please help....

[Samuel1]

Sorry to hear about the issues you experience with your Xperia J. Unfortunately I don't think there is anything you could do by yourself as it seems to be hardware related. Contact your local Xperia support and they can help you further with assistance, since it differs a bit from market to market.

http://www.sonymobile.com/global-en/support/contact-us/