I’m using the mangOH red board with the Sierra SIM card. I can send SMS to my smartphone, but I cannot send SMS to the board from my smartphone (to control a LED for example) .
Is there a specific process to follow or is there a restriction ?
Thank you for your help.
Could you please provide some information about your module and SIM card using below commands?
You can try setting AT+CNMI=2,1 (display new message indication) and retry.