I just got my Juice Pack Plus case for my iPhone 5S, and had a question for anyone out there with this case: Is the slider switch for the mute button somewhat vague? The other case buttons (sleep/wake, volume) work great. The mute switch feels decent when going from no-mute to mute, but there is no sense of actuation when going the other way. I use that button on my phone a lot, and if my case has a problem, I'll return it, but if that's how they all are, I'll live with it. BTW - Case works great with the iPhone 5S. No issues with the dual-flash.