sign in to iTunes required every 24 hours
I have many apple products including 3 iPhones that I use every day. the iPhone 5 is fine, I don't need to sign in to iTunes once I'm in. The iPhone 10 requires me to sign in every 24 hours. If I am using the iPhone 11, the iPhone 10 is kicked out of iTunes. Also, the iPhone 10 is constantly giving me notices of service unavailable. What gives?