The unit works well, when connected but.....
The unit has only worked for 4 months or so on my cx5.
The symptoms are that the unit does not see the network ie no signal, then you have the umbrella showing bottom left with no signal.
Switch off and start again and there are no simdetails etc.
Leave the car overnight, and the unit will show sim details etc, but if you have no network signal the details all dissapear one by one.
You only connect when you have a signal at start up. The unit does not spring into life once the unit is switched on.
Mine sprang into life during early June but has now failed to work for the last three weeks.
My diagnosis surely has to be that if the unit is not seeing a signal it has to be hardware.