I am using ec200u-cn module for accessing internet. Airtel works fine but no other SIM Card is detected. When I hit the AT+CPIN? command, I am getting CME ERROR: 10.
According to the at command manual the error refers to sim not inserted. This issue is only occurring while using jio or other sims with airtel it is working fine.
The SIM Slot is fine and there is no issue with airtel SIMs as well. With airtel it is working fine I am able to access the internet. Kindly help
Based on experience, due to different SIM cards, the driving capabilities of their SIM_DATA pins are different; I suggest that you replace the resistor directly connected in series with the SIM_DATA of the EC200U and the SIM_DATA of the SIM card with a larger resistance value to improve the driving capability. Try it
Hi,
I am currently using this module, which I believe is optimal.
At the moment, a 0-ohm resistor is connected the pin. Could you please let me know the recommended resistor value or acceptable range for this pin? I want to ensure that the electrical characteristics are within safe and reliable operating limits.
Thanks in advance.