Did you use the exact code from: https://www.espruino.com/RAK8212#sms
Or did you modify it somehow?
@Gordon started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Did you use the exact code from: https://www.espruino.com/RAK8212#sms
Or did you modify it somehow?