I have a suspicion it’s widget related. I had this problem a lot and I escalated to Apple Support. I tried all manner of restoring my phone and eventually the senior tech told me the issue was known by their engineers and they’re working on it. They’ll call me when they have a solution.
In the meantime, though, I’ve been experimenting with disabling widgets. I figured since the most recent restore attempt had me setup my X as a new iPhone, not restore from backup, it’s likely being caused by an app I downloaded. And since widgets are accessible from the home screen, that might be a cause.
So I tried disabling Find Friends and it didn’t help. BUT I disabled Blackberry Work Calendar, and it’s been a couple days without incident. I’m not sure just yet, but it’s something.
So, what widgets are you all running? Try disabling one at a time, starting with the 3rd party apps. And especially try BB Work if you have it.
I’m running the following:
Find Friends
Wunderground
BB Work (or I was until I disabled it)
Google Calendar
My Verizon Data
Crime & Place
Apple Batteries