If you don't have a phone with a ringtone maker, you can download the apps that help you create your own. The Android App Store has a wide variety of ringtone applications. The app 1,500 Unlimited Ringtones lets you choose from amongst over one thousand pre-made symbian ringtones. Alternatively, you can upload your own music or video files. This will make the ringtone playback more personalized, and you can use your own tunes to set notifications.
