yes, when I put sim in LMT HUAWEI I get signal and LTE is working fine, both devices is in the same place, when i take out sim, and put it in mikrotik, it shows invalid sim card, and when I put back in huawei, sim is working good, almost full signal from LMT LTE.
only one thing - sim card is aprox 2years old?
can it be a problem?