I have the same problem with my RAZR Maxx. I downloaded the Smart Screen (Lite) from the play store. Although it says it is for the Galaxy Nexus, it works fine on the RAZR. Once I got the phone on again which took about 10 minutes, I started the app and it works to wake a sleeping RAZR. I've used it the last 24 hrs, no problem. I also set the sleep time to the max 10 minutes so it doesn't go to sleep as often, just to be safe.