BG77 no service and +CSQ: 99,99

IoT Modules LPWA Module
,
1

Hello

Im using BG77
This is the list of command and the response of the module:

ATI
Quectel
BG77
Revision: BG77LAR02A04
OK

AT+CSQ
+CSQ: 99,99
OK

AT+CGDCONT?
+CGDCONT: 1,“IPV4V7”,“”,“”,0,0,0
OK

AT+QNWINFO
+QNWINFO: No Service

2

Check that your antenna is properly installed please.

3

pls run

AT+QENG=“servingcell”

4

ATI
Quectel
BG77
Revision: BG77LAR01A04
OK

AT+QENG=“servingcell”
+QENG: “servingcell”,“SEARCH”
OK

AT+CSQ
+CSQ: 99,99
OK

5

Maybe the search time of BG77 is not long enough, you need to give a longer time and try again

6

Thanks for the reply.

I have been trying to fix the connection problem for several days without success.

I am using a local network SIM card and also a st4sim esim chip.
I am currently in Georgia. Could the problem be in the local network?
Also, is it necessary to register an APN in advance?

7

Can you provide relevant AT logs?