We seem to have been able to listen to music using pocketable devices for ages. It wasn't always from our smartphones, and we used to have dedicated MP3 players, Ipods, and Walkmans for on-the-go music listening. But it was something that people did, and it has been since Walkmans were popular in the 1980s. However, almost any phone nowadays allows you to install your favorite music streaming service and even save some tracks on its internal storage.