Ringtones are audio files that are stored on mobile devices. Depending on the manufacturer, these files can be in many different formats. Some are monophonic, while others are polyphonic. These files can also be in different genres. A user can select a ringtones from their own music or grab it from YouTube. Then, using a ringtone maker, they can cut out the desired portion of the song and download it as a ringtone in MP3 or M4R format. For older versions of MacOS, syncing ringtones can be done by utilizing the iTunes program, which allows you to sync your music library. Open the iOS device in iTunes and drag the ringtone from the "Music" tab into the Tones section. Once you have successfully dragged the ringtone to the iOS device, the program will sync it to the device. In cellular technology, a ringtone is a brief sound that plays when a phone receives an incoming call. Contemporary ringtones are often comprised of several bars of a familiar musical tune. These ringtones are popular because they make it easy for users to tell whose phone is making the call. The proliferation of cellular phones has also increased the diversity of ringtones.