mlw,
Thanks for all of the suggestions!
I flashed the module with the generic firmware since that’s what the guide suggested. I only went to the AT&T version in hopes that would connect. Plus I’d like to stay as close to the default setup as possible.
So here’s what APNs are in use …
AT Interface
at+cgdcont?
+CGDCONT: 1,"IPV4V6","internet.sierrawireless.com","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
Linux Interface
root@swi-mdm9x28:~# cm radio
Power: ON
Current Network Operator: AT&T
Current RAT: UMTS network (LE_MRC_RAT_UMTS)
Status: Registration was denied, usually because of invalid access credentials (LE_MRC_REG_DENIED)
Signal: Strong signal strength (4)
PS: Packet Switched Not registered (LE_MRC_REG_NONE)
root@swi-mdm9x28:~# cm data
Index: 1
APN: internet.sierrawireless.com
PDP Type: IPV4V6
Connected: no
I tried to force it to use 3G without any luck. You suggested “410310” so I tried that along with what was originally reported “310410.” Neither worked, though.
at+cops=1,2,"410310",2
+CME ERROR: SIM failure
at+cops=1,2,"310410",2
+CME ERROR: no network service
So here I’m back to where I started.