I must say, I've never turned on the connection alert, I don't see the point. I'd be interested in people's use case.
CW
IMO...metal case = reduced GPS, WiFi, and Bluetooth signal integrity/strength. Goodbye F5...hello 935!
Just turn off the connection alert then and you'll never know you're not connected. When you are in range then you'll get your notifications. Admittedly you'll be a couple of minutes behind on things, but that's not such a bad thing.
CW