For about a year I could tell when my phone was about to ring in my pocket before the screen turned on. Something in the telemetry hardware stack whirring up made it feel a very very very near-imperceptibly tingly.
But then I changed phones and it doesn't happen anymore. Or, lower chance, there was a software update.
I believe it was the Pixel 3a.
Back in the flip phone days some people had little dongles hanging from their antennas that would light up seconds before the text chime went off. I guess it sensed the incoming transmission?
Must have listened to that little GSM handshake melody that used to be everywhere where speakers are connected to an active amp.