Apple Tv
I can't download netflix or Prime video unless i sign in to itunes but i have an android and it won't let me
To download any app from the tvOS App Store, you will need a complete, confirmed, and functional Apple ID account.
How to create a new Apple ID - Apple Support
Manage and use your Apple ID - Apple Support
This account is used to sign into the iTunes Store and App Store. This is different than signing into iTunes (the application), which is not requested here.
