Hi,
We have 500+ Teltonika units out in vehicles, the FMA120's were very reliable for us.
However the new FMB120's we are having to make alot of service calls to them because they are freezing and not showing on our server after a few days... when we visit the devices the lights are flashing as if the unit is working, they are not connected to the GSM network and when you view them in the configurator you can see a large number of fixes queued for sending, so i know the GPS is working. Once i reset the device it sends all fixes to the server.
Firmware Version: 03.18.16