ATE1
AT
AT+GMM
ATI
AT+CPIN?
AT+QSIMSTAT?
AT+COPS?
AT+CSQ
AT+CREG?
AT+CNMI=1,1,0,0,0
AT+CFUN?
AT+CGDCONT?
AT+CPMS?
AT+CMMS?
AT+CNMI?
AT+CMGL=4
AT+CMGR=4
AT+CGDCONT?
AT+CGATT?
AT+CGACT?
AT+CGREG?
AT+CSCA?