It makes sense to me with Bluetooth because the sound system and device are connected. But when it’s regular radio, how is it receiving and displaying this information?
In: 3
FM radio transmits text data through a protocol called Radio Data System, or RDS. The data is superimposed onto the FM signal, and radios with the decoder chipsets can display it.
For a more In-depth explanation, here’s the [wiki](https://en.m.wikipedia.org/wiki/Radio_Data_System).
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