I am having the same problem, but it isn't just Verizon. I've read the same issue is happening on Sprint phones. This could be not only switches but an Apple issue? I'm luckier than most in that this is happening infrequently, but when it's off, even the date is sometimes way off. I use my phone as an alarm when I' m away from home, so this is a big deal for anyone who does the same.