No, always have good coverage.I haven't seen that on my 9 Pro XL. Could it be that you were somewhere with poor cell signal for a time that day?
That raises the possibility that Facebook is misbehaving (and perhaps it's causing Chrome to as well, since it might be accessing the browser). Try uninstalling Facebook temporarily.Actually, yes. I noticed the 2 largest app usage was Chrome and Facebook, in that order. I was a little surprised that Chrome was higher as I really didn't use it all that much, especially when compared to Facebook.