Modem & SIM Annotated Diagnostic Test

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

For instructions on sending AT commands to a device, click here. Keep in mind that the instructions are written for Hologram Novas but use basic serial communication and standard AT commands so the same commands can be used on all modems. If you are unable to open a serial communication channel with your modem, contact your original equipment manufacturer for instructions on sending AT commands to your device.

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=?

If you are not seeing the AT commands, you are typing try sending ATE.  

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