Sitting on its own, only about 30 mins after the last time I checked my phone at work, I found my iPhone 4 on the famed "white screen of death". I came home and looked up all sorts of different suggestions and possible solutions and I have tried them all: Holding the home button and the hold button (even for up to five minutes) and I still have the same screen. The suggestions/videos show a reboot with the apple logo appearing, but this hasn't happened. I have also tried to "Restore" the phone on iTunes now three times. I have been having problems all day since I downloaded the new Facebook app 24 hours ago so I have deleted the app and tried another restore, but this didn't work either. Does anyone have any possible suggestions?!?