This isn't exactly 3g stuff but i'm surprised that when i'm listening to radio stations, it not only tells me the name of the station but in many cases, it also tells me the artist and name of the song that's playing.
My question is, how is this data being received? It's not being recieved via the internet because i've done tests!!
Is this data actually being sent via radio? If it is (which it must be) i'm surprised... i only thought radio sent sound waves? Is there a name for this? When did they first start broadcasting this data?