RG500U: at+cops=? doesn't work without SIM

[Vlad_Starodubtsev]

Scanning for available carriers requires a SIM card.
This example uses a SIM card protected by a PIN. If the card isn’t inserted or the PIN isn’t entered, scanning isn’t available and always returns error 3.

ati
Quectel
RG500U-EB
Revision: RG500UEBAAR03A09M4G

OK
at+cfun=1
OK

+CPIN: NOT READY
at+cpin?
+CME ERROR: 10
at+cops=?
+CME ERROR: 3

OK

//insert card there

at+cpin?
+CPIN: SIM PIN

OK
at+cops=?
+CME ERROR: 3

OK
at+cpin=0000
OK

+QUSIM: 1

+CPIN: READY

+QIND: PB DONE

+QIND: SMS DONE

+QNETDEVSTATUS: 1,1,“IPV4V6”,0
at+cpin?
+CPIN: READY

OK
at+cops=?
+COPS: (1,“T-mobile”,“T-mobile”,“26206”,2),(0-4),(0-2)

OK

[herbert.pan-Q]

Yes, you need to insert the SIM card.

[Vlad_Starodubtsev]

This functionality is expected to work without a SIM card, like all other modems.

This functionality AT+QSCAN does work without a SIM. By the way, could you share the documentation for the AT+QSCAN format?

[herbert.pan-Q]

[joshuasantiago]

@herbert.pan-Q message sir i need help