I've had my 5x for a couple days now... love most aspects of it but I've been experiencing some weirdness. I usually keep my phone on vibrate 99% of the time. But for whatever reason, my 5x keeps resetting the volume to be back on. At first I thought I was maybe hitting the volume buttons when I pulled it out of my pocket, but I put it on vibrate, set it on my desk, and several minutes later it started making noise when I got notifications. Since I don't want it doing that at work, I figured I'd put it in Do Not Disturb mode. But it ended that as well after several minutes and started playing notifications again.