I have a provisioned AT&T SIM card (I confirmed with AT&T that it has been activated) installed into my GX450. I’ve setup the APN within the web interface, both antenna are connected and at one point I had all, solid green lights (with no activity) but I was getting ‘could not connect to network’ though my cell phone could connect to the AT&T LTE network at the same location.
I then tried entering a SIM key ( I have no idea if this is needed ) and now I’m getting a message stating that my key is incorrect with 2 tries left. I’ve read the setup documentation, video on the Sierra website but I’m not sure if my issue is with the SIM card or ( most likely ) I’m missing a step in the web interface of the GX450.
Any hints, suggestions, links to docs, etc are greatly appreciated!