i have had my samsung m520 since about mid march i think...anyways i was about to use the fone when i noticed the screen had turned white i slid my fone closed and the back up and i noticed the white screen was gone i used the fone and hung up....when i was about to use my fone another time the screen was white again i did the same thing except this time it didnt work my screen remained white...this all happened within 20 min...i have tried taking out the battery for 30 sec then putting it back in but no dice...i am not sure what to do i dont want to take it to sprint if i dont have to b/c that will take forever so any help would be greatfull