Am I causing you nuisance if I recieve a text whilst my phone is on silent? Hardly.
Unless of course, you are able to intercept microwave signals.
I know they are illegal, but I am tempted at times to buy one of those mobile phone jammers. It would be great fun on an evening train out of Paddington

A couple of years back there was a spell of, mainly teenagers, going to their local comet/currys/etc with a pre-programmed "all-in-one"
TV▸ remote control in their pocket. Never saw it myself, but apparently it was quite entertaining watching all the TVs changing channels and switching themselves on and off, with the staff dashing round like madmen wondering what was happening !