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If you started a call with your cellphone close to a loudspeaker you could hear the connection being initiated through the speaker. Something like a tat-ara-tat sound.
It never went away.
I can still hear incoming calls, texts, and tower pings with my headphones.Oh yeah. I totally forgot about that. Why did that stop? Phones started using different frequencies or something?
It's actually a change in audio equipment. If you have old speakers you can still hear it.
IIRC transmission power was higher back in the day and the shielding of electronics wasn’t quite as good. So if you put your phone by a speaker the RF interference would be enough to be able to hear over the speaker.
GTA IV uses this sound when you're about to receive a call while driving. I remember being confused (and subsequently blown away by the attention to detail). I'm a little nostalgic for the sound so I'm glad it's preserved in that game.
I think they made a song with that noise, something dance or techno or house
Barcode Brothers - SMS
Mario Piu - Communication?
https://youtu.be/CGHKb5LSKE0?si=zGhmQNtJoLRcaDyp&t=55"They" probably made a bunch, but I'd recommend you to check out Venjent - Calling for You (ft. Oktae) (and anything else from him tbh).
some GSM phones would reboot PCs if a call came through and was situated near the PC.
I didn't know, that's fantastic!