On my galaxy s4 I have no unlock effect chosen so it's the lock animation going on when I open my phone. Sometimes, when I swipe to open it doesn't open and to add the lock animation doesn't do the "unlocking" animation, in turn, I can't get to my phone..I sometimes have to wait like 10 minutes before trying to open before it goes back to normal. Has anyone else experienced this? should I bring this up to samsung? I want to bring it to my AT&T but it doesn't do it all the time but I'd say once every 2 days. It gets annoying