Note: Before you begin, please ensure your SIM is successfully activated in the Hologram Dashboard.

For general instructions on sending AT commands to a device click here.

Modem, Module, & SIM Diagnostic Procedure

Using your favorite terminal program (Screen, Teraterm, Putty, GTKTerm, etc.), do the following:

  1. Run the following commands and record their outputs
Copy/Paste Commands(individual commands separated by hyphens): AT - ATI - AT+CGMI - AT+CGMM - AT+GMM - AT+CPIN? - AT+CCID - AT+CRSM=176,28539,0,0,12 - AT+CFUN?


2) Run the following command until the response reads something other than +CSQ: 99,99. You might need to move your device to get better reception.

Copy/Paste Commands: AT+CSQ

3) Run the following commands and record their outputs. Note, the last command, below, may take up to 3 minutes to complete.

Copy/Paste Commands(individual commands separated by hyphens): AT+CREG? - AT+CGREG? - AT+CGDCONT? - AT+CGACT?
AT+COPS? - AT+COPS?

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