Xperia ray problems with unlocking key pad

[Kirstielouise]

After the screen locks itself, I can't get it to come back on. I just end up with a black screen. But the led light works and the backlight. I've taken it to a specialist today, he said I have to downgrade the software. I'm currently using gingerbread. Is he right? Or will upgrading it to ics be better? I just want the proxy thing to work.

[Alexander1]

You don't have to downgrade your phone. You can try update the phone using PC Companion: 

http://www.sonymobile.com/update

If the problem still persists you should have the phone examined by an authorized service center. Please contact your local support for more information: 

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