Getting out my Sprint contract shortly in time for the Fathers Day Sale. I'm looking at the Mytouch 4G and have several questions. 1) Does the screen need to be unlocked to take a picture or does holding the camera button unlock the phone and enter camera mode? I know that the HD7 has this feature. 2) Can the hard buttons along the bottom be used to answer and end a call? 3) Is there a message notification LED on the phone? I would prefer the Sensation but I'm assuming it won't be offered as part of the sale.