I think free spotify is awesome on mobile and you say that downloading music is old but if you really mean it you should put mobile for free because everyone downloads because they don't pay for premium.
Just a thing you should think about.
Having music on mobile is awesome but you don't pay for it.
So I don't get it.
Ofc you can use free premium but seriously... 30 days, after the 30 days you need to pay and the stupid thing is that you have to give card number.
Why do you need the card number if it's free?
Are you just joking because it sounds so weird when you ask for card number.