so when i try and open my phone, it just says slide to unlock right? so when i slide to unlock and type my passcode in nothing happens, not only does nothing happen but the little dots that fill in the squares dont even show up.. the sounds are there but nothing happens.. if i try to restart my phone it doesnt work.. however if im at my slide to unlock screen and i double tap home then the ipod still works? and i can receive calls i just cant get into the phone, ive tried opening my contacts book during a call and that wont work either! what do i do?!