All of sudden white or multiple clour lines indication means its time to get the blackberry screen repair and basic troubleshooting can be tried like rebooting the phone and update software but if none of those work then solution is to get to some shop at Kmaster Electronics apparently has the best deal of all types of model replacement stuff and you may contact by calling at 416-831-5257 and ask the to check it first before they replace it for you and you may save 13% if you pay by cash and the company will pay the hst for you.