In order to use the live audio feature, you must first set your cellphone number as the SOS number.

An SOS number is an authorized phone number that can call the tracker. We have this in place so that spam callers, telemarketers, etc. cannot call the device. You will want to use any cellphone numbers you intend on calling the device from as your SOS number.

The live audio functions WILL NOT work until you set your SOS number.

Here is a brief tutorial:

Summary of what to do using the mobile app:
[Set SOS Number]
Enter your cell phone number
A text message will be sent to the device.
The device will reply.
Then go to the [INFO] tab of the mobile app to select “call”.

If you have the Auto-325 tracker, please refer to the Auto 325 Getting Started Guide