I had a major problem today on my iphone 5 running beta 2.it would not get off the lock screen just frozen.Had to downgrade back to ios 6.1.4
This happened to me today on lunch break at work. Couldn't swipe the lockscreen, couldn't swipe control center or notification center, couldn't even swipe to power off.
Did a hard reset, twice, and still couldn't swipe anything on the lockscreen. Figured I was looking at a useless phone until I could go home and restore or whatever.
But I held the home button to use Siri, had her launch an app (Twitter, but I don't think it matters), closed the app, and then everything was back to normal.