HERE is your manual in PDF format.
This unit doesnt have a volume mute function.
What are the problems you are experiencing.
If it says Mute or ATT on the display - it is the cellular mute function turning off the volume for an incoming call.
Page 34 details turning on and off the cellular mute function.
You also may try a hard reset by removing the face, and pressing the reset button.
Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question
×