When you need to take a break from listening to music on your iPhone, you can put a song on hold. This is helpful when you want to answer a phone call or attend to something else and then come back to the song later. You can put a song on hold in two ways: using Siri or the Music app.
To put a song on hold using Siri, activate Siri by pressing and holding the Home button (or saying Hey, Siri) and say something like Put this song on hold. Siri will confirm that the song is now playing on Hold and will resume playback when you tell it to.
If you're using the Music app, find the song that's currently playing and tap the Pause button . Then tap the On Hold switch next to Playback Speed . Thesong will appear with an On Hold badge next to it in your Library , so you can easily pick up where you left off.