Test command

Response syntax:

+CFUN: (list of supported <fun>s)

The response parameters and their defined values are the following:

<fun>

0 – Sets the device to minimum functionality. Disables both transmit and receive RF circuits and deactivates LTE and GNSS services.

Note: A configuration made with an AT command can be stored in Non-volatile Memory (NVM) using +CFUN=0 if the option is mentioned in the description of the command. This is useful if the command relates to a permanent hardware configuration because it avoids the need to give the command every time in the beginning of the application.

+CFUN=0 resets unsolicited notification requests.

When commanding the device to power off, wait for OK to make sure that NVM has been updated.

CAUTION:

CFUN=0 causes writing to NVM. When using CFUN=0, take NVM wear into account.

1 – Sets the device to full functionality.

2 – Sets the device to receive only functionality. Can be used, for example, to pre-evaluate connections with %CONEVAL.v1.3.x

4 – Sets the device to flight mode. Disables both transmit and receive RF circuits and deactivates LTE and GNSS services.

20 – Deactivates LTE without shutting down GNSS services.

21 – Activates LTE without changing GNSS.

30 – Deactivates GNSS without shutting down LTE services.

31 – Activates GNSS without changing LTE.

40 – Deactivates UICC.v1.1.x≥3v1.2.xv1.3.x

41 – Activates UICC.v1.1.x≥3v1.2.xv1.3.x

44 – Sets the device to flight mode without shutting down UICC.

The following command example returns the supported functional modes:

AT+CFUN=?
+CFUN: (0,1,4,20,21,30,31,40,41,44)
OK