Thanks Sara. I managed to get the forbidden list displayed, and cleared. Not certain what I was doing wrong before.
If I remain in the Console and continue querying, the forbidden list will get repopulated after 15-30 seconds. The response is:
So, assuming that that value decodes to MCC=311 and MNO=480, that’s Verizon, and it appears that Verizon just won’t accept the Hologram SIM.
I’ve ordered a couple of Verizon SIMs from DigiKey, so we’ll see what happens with those. AT&T just won’t work at this particular monitoring site. We haven’t tried T-Mobile, but I assume its coverage is the same as (or less than) AT&T.