Hi i have a DHD just under 6 months old its not locked to a network in UK and has latest gingerbread update 2.33 i think. Earlier this evening the battery was very low and went into power saver mode. So when I got home put it on charge. later when half charged i was updating a sat nav app. During starting the app it seemed to freeze so i had to remove the battery. On restart i cannot use the touch screen it is like it is no longer touch sensitive. Thus although i can see the phone is ok in background ie emails come in etc I cannot swipe down the lock or even enter the PIN to unlock when a SIM is inserted. I can't get into sync mode either to back things up. What can i do to make the screen work again? The phone hasn't been damaged or dropped.