Is the Sierra Wireless network now compatible with Cat-NB1 in the US? I read on a forum from 2018 that NB1 was only available mostly in Europe and am wondering if that has changed at all this year.
I recently purchased MangOH Red development board for the HL7800 (not the HL7800-M). Using the provided sierra wireless SIM card, I can activate Cat-M1 mode and successfully send SMS messages, initiate TCP data connections, and perform FOTA updates. I am located in Texas and am using AT&T MOBILITY. However, when I switch to Cat-NB1 (NB-IoT), I am not getting any signal.
Any information you can provide would be most appreciated.