5 ms·
It’s been almost 15 years but I do remember always knowing when my pre-smartphone cell phone was about to ring. It’d make my stereo system buzz loudly moments b
by macNchz 4y ago
It’s been almost 15 years but I do remember always knowing when my pre-smartphone cell phone was about to ring. It’d make my stereo system buzz loudly moments beforehand.
- NikolaNovak 4y agoI remember that! I wonder what it was - the actual signal sent or something in phone's reaction?
- runnerup 4y agoObviously the phone caused it. The signal from the tower wouldn’t be any different from all the other calls going to all the other phones on your block. They didn’t have beamforming that narrow.
- neurostimulant 4y agoThere were even led accessories you can attach to your phone that will light up when the phone is transmitting a signal. Basically just some leds attached to some coils to harvest energy transmitted by the phone.