To analyze that issue we would need log files and access to device, therefore please open ticket on VIP Helpdesk and provide device IMEI, configuration file, firmware version and log file. If you don't have VIP Helpdesk account 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 firstname.lastname@example.org