u-blox EVK-R4 Series User Manual page 17

1.11 Enabling error result codes
Command sent by DTE (user)
AT+CMEE=2
1.12 PIN code insertion (when required)
Command sent by DTE (user)
AT+CPIN="8180"
AT+CLCK="SC",0,"8180"
AT+CLCK="SC",1,"8180"
1.13 Registration on a cellular network
Command sent by DTE (user)
AT+CEREG?
AT+COPS?
1.14 Switching off the EVK-R4
To switch off the EVK-R4, send the +CPWROFF AT command. Make sure to use this command before
switching off the main power, otherwise settings and configuration parameters may not be saved in
the internal non-volatile memory of the cellular module.
UBX-16029216 - R07
C1-Public
DCE response (module)
OK
DCE response (module)
OK
OK
OK
DCE response (module)
+CEREG: 0,1
OK
+COPS: 0,0,"Verizon
Wireless",7
OK
Starting up
Description
Enables the cellular module to report verbose error result
codes.
Description
Enter the PIN code, if needed (enter the PIN of the SIM
card – 8180 is written here as an example).
Unlock the PIN at power-on (the last parameter is the PIN
of the SIM card – 8180 is written here as an example).
Lock the PIN at power-on (the last parameter is the PIN of
the SIM card – 8180 is written here as an example).
Description
Verify the network registration status.
Read the operator name and radio access technology
(RAT).
EVK-R4 - User guide
Page 17 of 31