Thanks for your post on the Community Forum and welcome. I'm sorry that you're having a problem with your S3 screen. Has this been fixed for you since your post?
If you are still having a problem with this, please complete our online Phone Fix diagnostics. You can access Phone Fix by:
Log into Your Account online, then go to Plan and device, click on Phone repairs button
Go to Phone Fix via our online Help & Support pages
If you would like to get in touch with the Mobile Team direct, please give us a call on 789 (Freephone from any Virgin Mobile), 150 (Freephone from any Virgin Mobile or any Virgin Media landline) or 0345 6000 789 (from any other phone).