SIM is not detected

Emnl · May 17, 2024, 4:53pm

I bought a 4G modem MUDI, model GL-E750V2C6,

I insert the SIM card and started the modem.

The SIM card is not detected.
Message on the OLED is "Insert SIM Card and Reboot".
in the Admin Panel, Cellular is indicated with the orange status light, and mention No SIM and SIM not detected.

already tried :

reinsert the SIM card and Reboot
Reboot modem
several SIM cards tested (BOUYGUES, SFR, ORANGE)
Test of the SIM card with another LTE 4G Modem (tp-link M7650) -> works

I guess the the router is not working and shall be returned to the seller.

ywp · May 18, 2024, 1:37am

Is the sim card inserted correctly?

Emnl · May 19, 2024, 8:53pm

Yes, according the picture with the corner up left.

ywp · May 20, 2024, 1:28am

AT+QUIMSLOT?

Please send me the results of this AT instruction an this log

Emnl · May 20, 2024, 5:27am

Here it is :

AT+QUIMSLOT?

+QUIMSLOT: 1

OK

ywp · May 20, 2024, 6:10am

Click Export Debug log and there should be a file
Look at the information inside

Emnl · May 20, 2024, 6:24am

Is the SIM inserted enough ?
it is impossible to push more. It hangs at this position.

ywp · May 20, 2024, 6:52am

The sim card doesn't look fully plugged in
This one's stuck crooked

Emnl · May 20, 2024, 7:17am

It look crooked on the photo but it is not, it can move slightly to be straight.
But it can definitely not be inserted fully. It seems the SIM slot is not OK.
I will sent the router back.
Thanks

ywp · May 20, 2024, 7:28am

hello
Could you loosen the screw a little and try it?
thank you

Emnl · May 20, 2024, 8:27am

I did, but it is still not better

ywp · May 20, 2024, 9:14am

I've had tech support contact you

Dyon · July 4, 2025, 6:31am

I've exactly the same issue.
SIM card is from elliot, works in a GL-xe3000c4.
But the E750v2c6 EM060KGL keeps saying insert sim card.
What was the fix?

Cathy · July 4, 2025, 9:11am

Hi @Dyon
For your problem:

pls make sure the sim card is inserted in the correct direction
reboot the router to see if it can detected
add a piece of paper to the non-contact surface of sim card and reboot the router to try.

If issue persists, pls share a screenshot of the INTERNET page, and run the following AT command under Modem Management page and post the command output with us to check:
AT+CFUN?;+QCCID;+CPIN;+QUIMSLOT?

Dyon · July 4, 2025, 10:12am

Thank you for the quick response.
Sim was correct installed and tried reboot several times.
Added a piece of paper, but is was already quite tight, did not help.

There does not seem to be a modem management page when there is no sim card detected?

Cathy · July 4, 2025, 10:18am

This seems to be another issue. Pls export the entire system log from SYSTEM -> Log page and send to me to check.