Funny how people without actual first hand experience with the issue defiantly ignore then attempt to refute every point you made.

A lot of people are ignorant of spectrum allocation, and sideband interference. Twenty years ago I had an old Samsung flip phone (2G/3G). I could tell every time a text came in when I was sitting at my computer, because the speakers would let loose with a tell-tale 'bzzzt bzzzt bzzzt' before the phone could finish handling it and displaying that I had a text. The handshake with the tower would be picked up somewhere in the audio path.