GPS fix usually comes from the satellites that your device uses, if it is using less than 4 satellites (which in most similar cases it does) then it means that there is something obstructing your device from receiving signal and you need to remove it. There can also be firmware issues where your device does not have correct firmware installed. We would like to analyze your issue.
Please contact your sales manager. If you don't have any contacts with our Sale managers, please contact with them on our official website https://teltonika-gps.com/ and click on the "Contact Us" button. When you will click, please fill the form and submit it. Note: as a topic, please choose "Vehicle telematics". Or you can send an e-mail with description of your situation to email@example.com When contacting Us, please provide: IMEI/Logs/Configuration file/Intenational GSM number/Firmware version/ect, please follow these recommendations: https://wiki.teltonika-gps.com/view/Recommendations_for_filling_a_query_description