in terms of mp3 players, it may not all be marketing nonsense, I found that out while researching ipods/mp3 players for a friend. Typically since they are decidicated audio devices, they support better quality g
formats/codecs then typical phones, so being mp3 compatible means it supports those higher qualities. The higher quality will still play on phones but, you just don’t get that better quality.
in terms of mp3 players, it may not all be marketing nonsense, I found that out while researching ipods/mp3 players for a friend. Typically since they are decidicated audio devices, they support better quality g formats/codecs then typical phones, so being mp3 compatible means it supports those higher qualities. The higher quality will still play on phones but, you just don’t get that better quality.
I’m not talking about players, I specifically mentioned headphones. A pair of small speakers you stick on your ears.