- 1). Push the Centro's "Phone" button, and then press "Menu."
- 2). Select "Options" from the on-screen menu, and then select "Sound Preferences." Select "Ring Tones" on the "Applications" tab.
- 3). Select the tab next to "Known Caller" to bring up the list of each audio file on your Centro. Locate your the ring tone that you transferred with Bluetooth. Select it.
- 4). Select the tab next to "Unknown Caller." Select the same audio file from the list, unless you want to set a different ring tone for unknown callers.
- 5). Select the "Volume" tab to choose a volume level, if desired. Select "Done" when you are finished. The ring tone is now set.
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