The headphones that came with your iPhone also let you control music playback from the button on the microphone.
- Press button once to pause a song and press it again to resume playing the song. (If you do this when a call is coming in, the music pauses and the call is answered. When you press it to hang up, the music resumes playing.)
- Press button twice to advance to the next song.
- Press button three times to jump back to the previous song.
- Press button four times to jump back to the previous song and pause it.