In this case, in my experience, it could be caused by the sim card . Have you tried switching to another SIM card? Is the antenna not connected?
I can send you a tool to catch the log, but I can’t help you analyze the modem log in the forum. Therefore, it may still be necessary to submit case to Quectel.
I’ve tried 5 different sim cards.
I’ve tried two different manufacturers of SIM cards.
Both with same results.
Antenna is connected.
Yes please. The tool would be most helpful.
Ok. I understand it may be necessary to submit case to Quectel.
On Windows，you can use the QWinLog to cache the modem log.
I will send it by message.
- Open and run QWinLog, select DM Port, please refer to the attachment I provided for details;
- wait for 3 minutes.
- Run AT+CFUN=0 and AT+CFUN=1 again
- Wait for 3 minutes.
- Close the QWinLog
If it is an individual SIM card, the SIM card may be bound to the IMEI of other devices.
Please create a ticket to the Quectel.
An engineer is automatically assigned to check the log for you.
This topic is in the Driver subjects.