I had an apple music Family plan through itunes and had family sharing enabled. I then upgraded my Verizon plan to an unlimited plan that comes free with apple music. Well, lets be honest, not really free, they just charge you for it in their price and say "free". I switched both my plan and my wife's and now my wife's devices no longer play anything through apple music. I signed onto my itunes account and it says to upgrade to a family plan. I'm guessing family sharing goes out the window, even though both devices are suppose to have apple music for free.