SMS CMS Error 500

Connectivity LTE Cat-M1 & NB-IoT
1

using a SIM7000A, Hologram dashboard says device is connected usage is 0. I am in Raleigh, NC.

AT+CGREG?
Registered roaming

AT+CPSI?
LTE CAT-M1,Online,310-410,0x2717,195163152,49,EUTRAN-BAND12,5110,3,3,-10,-102,-76,14

LTE ONLY
AT+CNMP=38

CAT-M ONLY
AT+CMNB=1

AT+CMGF=1
AT+CMGS=“19998889999”

TEST <ctrl+z>
+CMS ERROR: 500

I expected this last command to send my mobile phone a sms message. Thoughts on why the SMS is not sending?

2

Latest findings

There are conflicting reports Network Registration command says Registration denied and the Network Registration Status command says Registered, roaming. The hologram dashboard says connected. Does registration denied explain why I cannot send an SMS? How do you debug registration denied?

AT+CGREG?
+CGREG: 0,5
OK

AT+CREG?
+CREG: 1,3
OK

3

Hey @dnndev,

Can you please run this modem diagnostic and send the results to success@hologram.io so our team can look into this for you.

Best,
Maiky