For phones served by the AT&T network, download the AT&T Ringback Tones app, which is available through the Google App Store or iTunes App Store, and then purchase ringback tones from the iPhone or Android app. They can also be bought through a mobile web browser by accessing the AT&T Ringback Tones homepage.
Custom ringback tones let users personalize phones by replacing the standard ring tone that people hear when they call. Many options are available, from jokes and popular songs to movie quotes and much more. Users even have the option to record a personal message that will play before the tone.