The set command reads the 2DID (SERIAL_NUMBER_A) of the nRF9160 System in Package (SiP). If the 2DID has not been written to the device, the response is an empty string.
Syntax:
%2DID
The following command example reads the 2DID when a 2DID exists on the device:
AT%2DID
%2DID: "F1413BQF072303"
OK
The following command example reads the 2DID when a 2DID does not exist on the device:
AT%2DID
%2DID: ""
OK