BG96 Network registration failed

Technical Subjects
1

Hello,

i’m using the WisLink cellular BG96 Arduino shield.
i am not able to have the list of the available Networks :

AT+QCFG=“NWSCANSEQ”,03

OK
AT+QCFG=“IOTOPMODE”,1

OK
AT+QCFG=“BAND”,0,10,10

OK
AT+QCFG=“NBSIBSCRAMBLE”,0

OK
AT+CSQ

+CSQ: 99,99

OK
AT+QICSGP=1,1,“CTNB”,"","",1

OK
AT+QIACT=1

ERROR
AT+QIACT?

OK
AT+COPS=?

+CME ERROR: 3
AT+COPS?

+COPS: 0

OK

Any help please ?

Thank you.

2

AT+QCFG=“NWSCANSEQ”,03 //config to search NB first

AT+QCFG=“IOTOPMODE”,1 //LTE Cat.NB1 only

AT+QCFG=“BAND”,0,10,10 //lock to band5 only

pls donot lock to band5 only , if you do not know the exact band info , pls search network the whole band

I attach one doc for you reference 。
https://cnquectel-my.sharepoint.com/:f:/g/personal/america-fae_quectel_com/Eng6KpTo1fpLlokhv10ihVUBZc6OuiO8Z9k_oYR5CFRAxA?e=MirjdW