I didn't specify phone calls because you don't need a smartphone for that (just a phone). I'm not sure you need a smartphone for GPS either, but I don't actually know.

I'm trying to argue that we're heading toward a system where services that we use daily don't function well without some form of data connection, even if that's only for the purpose of synchronisation (e.g. your notes being available when you get to your tablet/laptop). I agree that smartphones can work perfectly well without the internet but that's not quite the way we use them now.

We might think we'd be fine offline but try turning the wifi and data off on your smartphone and see how frustrating you find it.

Your notes should use the cloud to persist, or they will disappear when the devices are out of work.

Where did you get music? Scrape from CD?

As for GPS and calls, their infrastructures are also part of the Cloud.

Music, many games.