Sorry if the question is not about Espruino as much as the BG96 module, but I'm not sure where else to ask.
I've been trying to connect RAK8212 to an LTE network. I have a SIM card from "soracom". It works just fine in Ublox SARA-R410m and SIM7000A modules. In both cases it connects to AT&T network.
Now if I use the very same card with RAK8212, it doesn't even detect AT&T! Given the AT+CPOS=? command, it lists only Verizon and T-mobile plus some "numeric" others. But not AT&T. If I try to connect to either Verizon or AT&T, it doesn't connect. I know that AT&T uses 4GLTE CAT M1, and T-mobile - NB-IOT, but BG96 is supposed to support both, right? Is there some setting I'm missing? Did anyone connect to AT&T? I'm in the Bay Area and the signals are quite strong. My i-phone can see all three of the above and even Sprint! And I thought Sprint was strictly CDMA, not GSM.