everyone, I'm developing a project with LTE 4G module and having a problem described as following:
so,does anyone know whether there are some key points I have to pay attention to my applet or the AT+CCHO command? I'll be very appreciated and willing to give what all I have.
Ok,finally it proved that no matter what you sent to the App through CGLA, the App must gave back something to the 4G module, otherwise the module released +CME ERROR: 15.