error Gps Tracker

Error Code

GSM communication failing to establish, SMS service interruption or missing responses for queries.

? What Causes This

Invalid SIM card inserted or improperly handled user IDs; tracker not set with valid authorization numbers allowing it to respond to incoming messages properly.

✓ How to Fix It

Verify proper insertion and adherence to GSM network requirements met by SIM cards used within the device.
Ensure authorized cell phone numbers are correctly programmed for access rights.

Source: page 28 of the official manual

From the manual

This error code appears in:

Gps Tracker 303fg 2 V3 4 Gps Locator