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Q: Is it possible to turn on/off via configurator when the device is connected to USB/Charger
A: yes, it is possible
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Q: Any OBD2 device will be updated to 5G?
A: No, IoT devices don’t need 5G network because they don’t use much data, rather, they are evolving towards Cat-M1 network (FMM devices)
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Q: Do the device (FMC003 or FMC00A, etc.) provide bi-directional, half or full duplex communication with the vehicle On Board Diagnostic System (OBD-2)?
A: The device uses bidirectional transmission in the sense that you can read and clear DTC codes, read the vehicle's VIN (if such information is available through the OBD interface), and check interface parameters. The commands used for this are listed on Wiki:
https://wiki.teltonika-gps.com/view/FMB003_SMS/GPRS_Commands#OBD_Commands
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Q: Does the SAE J1939 included in the OBD protocol?
A: OBD devices are dedicated for light vehicles, SAE J1939 is standard used in trucks to read FMS data, it is not OBD protocol
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Q: is it possible that any Malfunction event can be reset using OBD2 device command?
A: no only DTC codes with cleardtc