Up until yesterday, the pop up screen would always come on, whether the phone was locked or not; it's how I had to do in the settings. Now, all of a sudden, if the phone is locked, the pop-up screen no longer comes on. The screen turns on, i see the notification in the status bar, but the pop-up screen no longer shows until i unlock and use the pattern to unlock. I changed nothing at all and the settings are as they were. Any ideas?? Thx for any help.