BG96 2G GMS900 Connection Problem

BG96 2G GSM900 Connection Problem

AT command sequence:
1- ATI
Quectel
BG96
Revision: BG96MAR02A08M1G
OK
2- AT + CPIN?

  • CPIN: READY
    OK
    3- AT + QSIMSTAT?
  • QSIMSTAT: 0,1
    OK
    4- AT + QCFG = “nwscanseq”, 010302.1
    OK
    5- AT + QCFG = “iotopmode”, 2,1
    OK
    6- AT + QCFG = “band”, 1,0,80000,1
    OK
    7- AT + QNWINFO
  • QNWINFO: “GSM”, “28601”, “GSM 900”, 36
    OK
    8- AT + CSQ
  • CSQ: 30.99
    OK
    9- AT + CGATT?
  • CGATT: 0
    OK
    10- AT + CREG = 1
    OK
    11- AT + CREG?
    CREG: 1.1
    OK
    12- AT + CEREG?
    CEREG: 0.4
    OK

What is the difference between AT + CEREG and AT + CREG? Which can I tell if GSM900 connection can be provided?

13- AT+CGREG=1
+CGREG: 1,2

14- AT+CEREG=1
+CEREG: 1,4

15- AT+QSPN
+QSPN: “Turkcell”,“Tcell”,"",0,“28601”

16- AT+QENG=“servingcell”
+QENG: “servingcell”,“NOCONN”,“GSM”,286,01,52F2,956B,14,36,-,-48,255,255,0,61,61,1,-,-,-,-,-,-,-,-,-,"-"

My goal is to run TCP Client but before AT + CGREG? and AT + CEREG? I can’t get 1 or 5 answers from commands.

These codes are correct, there was a problem with the sim card.

pls don’t run the following command every time , when you turn on the computer. They will trigger a new network search.
AT + QCFG = “nwscanseq”
AT + QCFG = “iotopmode”
AT + QCFG = “band”,

After you have finished these config , pls enter the below cmd

1.AT+cfun=0
2. waitng 20s
3. at+cufn=1

I attached one Bg96 network setting doc for you ,

https://cnquectel-my.sharepoint.com/:f:/g/personal/america-fae_quectel_com/EmOZObXHU7tImSJ4mVyv9jkBzZTIMYPsOTzVjAXuj4Aw1Q?e=pk5KGM