BG96 - NB1 - PDP Context Activation Fails

Hello everybody,

I am trying to connect with BG96 module to NB1 network only - in central Europe with Vodafone provider, but all my attempts fails. SIM Card shall be enabled for NB1.

I am trying to kind of follow: Flow Chart of Using TCP/IP AT Commands from BG96_TCP/IP_Application_Note_V1.2

Could you advise me what could be wrong or where am I making an mistake please? Thank you in advance.

Power Off On
POWERED DOWN
[00]
RDY

Disable Echo
ATE0
ATE0
OK

SIM Card ready
AT+CPIN?
+CPIN: READY
OK

Select Band 20
AT+QCFG=“band”,0,0,80000,1
OK

LTE Cat NB1
AT+QCFG=“nwscanseq”,03,1
OK

LTE only
AT+QCFG=“nwscanmode”,3
OK

LTE Cat NB1
AT+QCFG=“iotopmode”,1
OK

Network Registration Status - Unknown
AT+CGREG?
+CGREG: 0,4
OK

EPS Network Registration Status - Not registered. MT is not currently searching an operator to register to.
AT+CEREG?
+CEREG: 0,0
OK

Configure Parameters of a TCP/IP Context
AT+QICSGP=1,1,“MY.APN”,"","",0
OK

Define PDP Context
AT+CGDCONT=1,“IP”,“MY.APN”
OK

Query - Parameters of a TCP/IP Context
AT+QICSGP=1
+QICSGP: 1,“MY.APN”,"","",0
OK

Query - PDP Context
AT+CGDCONT?
+CGDCONT: 1,“IP”,“MY.APN”,“0.0.0.0”,0,0,0,0
OK

Query Network Information
AT+QNWINFO
+QNWINFO: “CAT-NB1”,“23003”,“LTE BAND 20”,6447
OK

Signal Quality Report
AT+CSQ
+CSQ: 20,99
OK

Query the information of serving cell
AT+QENG=“servingcell”
+QENG: “servingcell”,“LIMSRV”,“CAT-NB”,“FDD”,230,03,10F51F,72,6447,20,0,0,A037,-79,-5,-74,13,61
OK

Activate the PDP context
AT+QIACT=1
ERROR

Query the Last Error Code
AT+QIGETERROR
+QIGETERROR: 561,activate pdp context failed
OK

To lock Band 20 ,pls send the below cmd:

AT+QCFG=“BAND”,0,80000,80000

For more analysis , we need collect QXDM log , pls reach to : support@ quectel.com

But it should still work even without locking in band 20, right?

Hello,

I have tried to use AT+QCFG=“BAND”,0,80000,80000 instead of AT+QCFG=“band”,0,0,80000,1 but unfortunately with the same outcome.

I am starting to think if I did get the module + SIM into the state 4.5. from the article:

https://en.na4.teamsupport.com/knowledgeBase/18027787

It says:

If the APN is configured incorrectly or if the modem is programmed to register onto a wrong network, the SIM might get locked. If this happens, the SIM-Modem combination might not work. Try using a different SIM-modem pair and re-program with the right set of commands. If this does not work, contact the network provider to unlock your SIM card.

Did you experience this behavior before?

Thank you in advance for your answers and advices.