I just updated my Note4 on vzw yesterday, and I was experimenting with the Advanced Calling feature.
I live on the fringe of 4G & my reception is mostly 2 +/- bars of 3G.
As soon as I hit the send button, (to make a call) the signal drops from 3G to 1x and stays there.
I don't remember it doing that before, but have to admit that I never really watched it either.
If I go outside to where I can get a 4G signal, it stays on 4G.
My wife's Note4 is still on KitKat, and her's will stay on 3G when a call is initiated.
I even tried turning the advanced calling feature off, but 3G still drops off to 1x when a call is initiated.
An FDR may be in my future....
I live on the fringe of 4G & my reception is mostly 2 +/- bars of 3G.
As soon as I hit the send button, (to make a call) the signal drops from 3G to 1x and stays there.
I don't remember it doing that before, but have to admit that I never really watched it either.
If I go outside to where I can get a 4G signal, it stays on 4G.
My wife's Note4 is still on KitKat, and her's will stay on 3G when a call is initiated.
I even tried turning the advanced calling feature off, but 3G still drops off to 1x when a call is initiated.
An FDR may be in my future....