MX67C SIM Not Recognized after SIM Change

[Les_Russell]

We had a working SIM card from one carrier installed in a MX67C, we changed the SIM card to a different carrier and the new SIM is not being recognized. Almost like the MX67C has cached information from the first SIM and is not clearing it when the new SIM is installed. Meraki Dashboard currently showing uplink status for SIM as "Enabled" but no IP address assigned. 

Any thoughts greatly appreciated if you have encountered a similar situation.

[CptnCrnch]

Silly question: have you rebooted the MX?

[Les_Russell]

Not a silly question, but yes we rebooted several times and no impact

[NolanHerring]

What is the vendor of the new SIM your trying? To my knowledge they only support Verizon and AT&T

[Les_Russell]

Good thought - but same exact SIM is working in other MX67Cs we have deployed - only difference being the ones that are working were the first and only SIM installed in the MX - no previous SIM installed

[BlakeRichardson]

@Les_Russell Try a factory reset and see if it comes right. 

[Les_Russell]

Good thought, no local tech at location so would have to figure out how to have IP, etc entered after factory reset.

[Charlie-Sangha]

I would recommend trying the following:

• Confirm no pin on the sim card or APN settings required part of the configuration. Some Carriers require a specific APN setting for Data Connectivity to work. This may require a second connection to configure the MX not sure if it can be configured via the management page.
• What firmware version is the MX using? - on 14.39 firmware there have been some bugs which have been resolved on later beta versions such as 15.19. These issues were specifically around cellular and connectivity.
• Confirm you have cellular coverage? - Does the SIM work in a different device just to rule out the sim card and network coverage.

Finally, if you do decide to go ahead and factory reset the device which is an option you can use the following link from Meraki Documentation on how to complete this - https://documentation.meraki.com/zGeneral_Administration/Support/Resetting_Cisco_Meraki_Devices_to_F...

[Les_Russell]

Thanks for all of the good input. appreciated