Audiovox Thero User Manual page 76

Chapter 3: Phone Functions
Sounds
Use to select the sounds for incoming calls, voice mail and SMS messages.
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When a box is checked that alert will sound.
Tap ">" to play selected sound.
Tap "..." to select a sound file.
Select a receiving type from "Ringer Only",
"Ring and Vibe", "Vibrate Only" and "Ring
and Vibe Off" in the "Incoming Call" section.
You can also select a receiving type with the
Speaker Icon button on the VOICE tab screen.
Adjust the volume of the conversation.
The volume can also be changed
at the VOICE tab.