Hello Stark_Hu,
Thanks for using Apple Support Communities.
If I understand your post correctly, you are a member of Apple Music, and you'd like to download all of your music to your iPhone to listen offline. For help with this process please follow through the steps below.
You can download songs, albums, or playlists to your device so that you can listen to them when you're not connected to the Internet.* You must download songs, albums, or playlists on each device that you want to use for offline listening.
*You can download music on up to 10 devices. These songs are accessible only during your Apple Music membership.
- In the Music app, find the item that you want to download.
- Tap the More Options icon
to the right of the song, album, or playlist name.
- Tap the Download icon
to the right of the item's artwork. If you see a
instead of the download icon, the item isn't in your iCloud Music Library. Tap the
to add the item to My Music, then tap the download icon to download the item to your device.
Songs and albums appear under My Music > Library. Playlists appear under My Music > Playlists.
- In iTunes, find the item that you want to download in the My Music or Playlists tab. You can't download items to listen to offline from the iTunes Store.
- Click the cloud icon to the right of the song's name, on the album cover, or to the right of the playlist's name.
Songs and albums appear under the My Music tab. Playlists appear in the Playlists tab, under Apple Music Playlists in the sidebar.
View just songs, albums, and playlists that you downloaded to your device
- iPhone, iPad, and iPod touch: In the My Music tab, tap Library. Then tap any of the different views (Artists, Albums, etc.), and turn on Only Offline Music. A message that says "Showing only music on this [device]. Show All Music." appears at the top of the screen. Tap Show All Music to see all of your music.
- Mac: In iTunes, from the menu bar at the top of your computer screen, choose View > Only Offline Music. A message that says "Showing only music on this computer. Show all music." appears at the top of the screen. Click "Show all music" to see all of your music.
- Windows: Hold down the Control and B keys on your keyboard to open the iTunes menu bar. Choose View > Only Offline Music. A message that says "Showing only music on this computer. Show all music." appears at the top of the screen. Click "Show all music" to see all of your music.
When you view an item that you've downloaded to your device, you'll see an offline icon
near it, but its exact location varies. For example:
- If you download an entire album or playlist, the offline icon appears when you're looking at the album or playlist in My Music. You'll also see an offline icon when you view a compilation, but not when you view specific genres, artists, or composers.
- If you download a song, the offline icon appears to the right of each song title.
- If you download songs from an album, but not the entire album, the offline icon appears to the right of just the songs that you downloaded.
Add music from the Apple Music catalog to your library on your iPhone, iPad, iPod touch, Mac, or PC
Cheers.