The conversation between human and AI assistant.
What's a good way to use an extra iPhone 4?
That sounds great. What about using it as a music player? Are there any good music apps for the iPhone 4?
Yes, there are many music apps available for the iPhone 4 including Spotify, Apple Music, and Pandora. You could also download your favorite albums onto the phone and use the built-in Music app to listen to your music offline.