Can't find the answer to this question anywhere. Just tried apple support and they didn't seem to know either. Or maybe didn't understand the question. I work on ships for long periods of time without an Internet connection. Does anyone know how often you need to connect your iPhone to the Internet to keep using downloaded music? For example with Spotify you have to connect every month or it stops working. Apple support just gave me the standard answer that it continues to work as long as your subscription is active. But how does your phone know your subscription is active if it's not connected to the net? Or do they just assume that at some point you have to connect your phone to the Internet at which time it will check your subscription?