VoLTE on EG25-G sometimes it doesn't turn on

IoT Modules LTE Standard Module
1

Good day, I have a problem, it is not constant. Sometimes when I reboot the modem (AT+CFUN=1,1) VoLTE does not start, I see this by (+QCFG: “ims”,1,0) and after reboot (+QCFG: “ims”,1,1) what could this be connected with?

Quectel
EG25
Revision: EG25GGBR07A08M2G

AT+QMBNCFG=“AutoSel”
+QMBNCFG: “AutoSel”,0

AT+QMBNCFG=“List”
+QMBNCFG: “List”,0,1,1,“ROW_Generic_3GPP”,0x0501081F,202307241

AT+QCFG=“nwscanmode”
+QCFG: “nwscanmode”,3

AT+QCFG=“ims”
+QCFG: “ims”,1,0

AT+CFUN=1,1

AT+QCFG=“ims”
+QCFG: “ims”,1,1

2

For example, the EC25-E model behaves normally, everything is fine when rebooting. The same profile is selected - ROW_Generic_3GPP

3

hi,
Try changing this command AT+QCFG=“nwscanmode” to 0

4

In this case 2g and 3g work, but volte does not work, but only volte needs to work