rfavanagh & strusdell - From the testing I have done tonight and the hour long phone call with apple support, the songs may not actually be streaming of cellular. I can't 100% confirm this at this time, but I am 75% positive. I have them looking into it.
I disabled all of the "cellular" options mentioned previously and even disabled the "Wifi Assist" and the option below it. I was still having the same problems as everyone has cited. To narrow down the problem, I deleted all of the songs on the iPhone and began messing with the iTunes sign-in and Wifi.
- What I noticed was that, as one solution mentioned, when you sign-out of iTunes it of course disabled the link to streaming any songs that weren't on the phone.
- Once signed-in, my purchased playlist appeared; however, it required me to sign-in in order to play or listen to them over Wifi or change the cellular settings. None of these songs would play at this time.
- Once I enabled Wifi, the songs would play as I selected through the playlist. So to test, I disabled Wifi and a few songs would play, but what I noticed was it was only the songs I had streamed at that point, which was like 5 songs; however, none of the songs I hadn't streamed would not play. The phone would just skip through them.
- To test this again, I enabled Wifi and streamed a few more songs. At this point, similar findings were observed, which narrows the problem to the iTunes account and the purchased playlist.
- Strangely, with the phone synced to the computer, these streamed songs would appear to be included in the "Songs" memory usage bar at the bottom. This leads me to believe that they are stored in a cache or somewhere on the phone, even though the menu gives you the option to "download" the song to the phone in the Music app.
- Therefore I believe the only work-around at this point is to sign-out of your iTunes account on the device.