JY-UQD11N4G - 4G sim card - how to get this working
The JY-UQD11N4G provides an inbuild 4G sim card slot (fixed cable). I understand that this sim card is not to be used for phone calls. It is used to get internet access. I have a sim card only for data trafic. Can anyone tell me how to configure that to get it working?

When I put this sim card in the sim card slot (cable) the status for sim cards tells me, that this is sim card 2. That indicates, that there is another option to insert a sim card. Where is the slot for sim card 1? Is this the favorite slot for a data sim card?

Is there a more detailied manual available for this head unit?

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