Transferring your iTunes library to your iPhone can be as simple as clicking a couple of buttons to sync your music from your computer to your phone. If you have more music than your iPhone can hold or if you want to transfer only selected parts of your library, sync a selection of playlists, artists, albums or genres. Alternatively, use iCloud to download music directly to your iPhone without connecting to iTunes.
Sync Music to an iPhone Using iTunes on a Computer
Transfer an iTunes Library
Connect your iPhone to your computer and open iTunes. Select your iPhone's image icon from the menu bar.
Select Music. Make sure the Sync Music box is checked and select Entire Music Library. To include videos in the sync, check the Include Music Videos box.
ITunes checks the size of your library against available space on your iPhone. Go to the Storage bar at the bottom of the screen to see how much free space you have. If the bar shows the phrase "Over Capacity," you don't have enough room to transfer the library. Either free up space on your iPhone or switch to transferring a selection of your music collection.
Transfer Selected Music From iTunes
In iTunes, select your iPhone's icon to open its settings and select Music. Check Sync Music and then Selected Playlists, Artists, Albums and Genres. Check boxes in any of the lists to choose which music to transfer.
Go to the bar at the bottom of the screen to check that your iPhone has space for the transfer. If you see an Over Capacity message, remove some of your selections. Select Apply to start the sync.
Download Music to Your iPhone From iCloud
If you have enabled iCloud, you can download music directly to your iPhone instead of transferring it from iTunes.
Tap Music on your Home screen and then select Playlists. Open the Purchased playlist.
To download all available songs, pull down the screen and tap Download All or scroll through the list and tap the Cloud icon to download individual tracks.