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recently i am testing my fmb640 in remote mining area, where there are several GSM signal blind spot

I have set the parameter in configurator to send record to microSD , and set record setting after position fix

As i know, the device will create record data wether there is GSM signal or not since there is record period and send period (min. send period 1)

But in the platform i used (Gurtam wialon) it seems that the device only send record when there is a GSM signal, it didn't send any previous unsent record

The possible problem in this case is my device setting in configurator or setting in web platform when recieving data

Does someone here have any similar problem and could help with my problem ?

Best regards,

Another information i got, the GPS signal is not blinking which means it didnt get signal so it doesn't create report.

should i just move the antenna to outdoor position ?(which is hard since we use Scania)

or is it okay if i change record setting to after time sync instead of after position fix ? will the GPS accuracy reduce significantly ?

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Hello Luthfan,

Good day. Thank you for the question.

We would like to analyze your issue. My suggestion is that you raise a ticket on VIP Helpdesk or contact your Sales Manager on this as we will require more information such as the Configuration and the log files before we can provide any insights. If you don't have any contacts with our Sales managers, please contact them on our official website and click on the "Contact Us" button. Please fill the form and submit it.

Note: as a topic, please choose "Vehicle telematics" or you can send an e-mail with the description of your situation to

When contacting Us, please provide: IMEI/Logs/Configuration file, please follow these recommendations:

Thank you for understanding.

Kind regards.