I am trying to get a Sim7020g working with my mkrzero, using this tutorial. I have the same module used. Arduino NB-IoT with SIM7020 and T-Mobile - Hackster.io
I can communicate well enough with the module. But when I check the signal strength with "AT+CSQ" it returns 99,99. Meaning it has no signal. Where should I go from here? I have this simcard (https://www.amazon.com/gp/product/B0BCGGL3Q4/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1) in it and tried 2 different antennas that worked on my SIM7000