Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.
If you have performed a software repair on your unit but the problem persist, I would suggest that you visit nearest service center to have your phone examined by a technician. You can contact your local support team for further information about nearest service center and/or how to proceed with this in the best possible way: http://www.sonymobile.com/global-en/support/contact-us/contact-info/
