I'm using an older iPhone (6 or 7) to just store music. I set it up and iTunes got it connected right away. The only problem is that when I get a text on my regular phone (iPhone 11) I get notifications on my old one as well. Do I need to sign out on that one? I was worried that then iTunes wouldn't recognize it when I try and add music. Or should I just turn notifications off? I might end up putting it in airplane mode, which will probably work, but thought there might be a better solution. Thanks!