Any content that meets your iPhone storage? If the iPhone has full music albums you downloaded from iTunes Match, perhaps it 's time you delete some old songs so that your iPhone will be felt 'relieved ' and fit for downloading new applications. How do I do that?
If you enable iTunes Match on iOS device (Settings> Music> iTunes Match On), you will not be able to manually delete all the songs stored on your iPhone.
Although you can not manually delete these tracks with iTunes Match is active, but the Music app can automatically delete all the tracks so you can empty the storage for other purposes. For example, when downloading a new application then the Music app will automatically delete the oldest or the music track that you rarely play.
Additionally you can still manually control any song content that can be removed. To get it you need to open the Settings> Music> iTunes Match OFF. Afterwards return to the Music app and wait until iTunes Match content to disappear.
Next select a view where you can see a list of music tracks. Swipe to the right in the direction of the tracks you want to delete. Will appear a red delete button, tap on the button then select the track that you will be deleted.
In addition to removing the music content one by one, you can also delete them together. For that, choose Playlists, Artists or Albums that you want to delete. Furthermore tap and hold the item earlier. An X will appear in the upper-left corner of the item you wish to remove. Tap on the X then the item and all its contents will be deleted.
In the future, perhaps Apple will provide an update that allows you to remove the music track, but for now, please try the above :)