SIM interface issue (BG96)

IoT Modules LPWA Module
1

Hello,

I am developing an application on the BG96 module with two different configurations:
quectel Minipcie eval board and ST Cell02.

Unfortunately I have the same problem on both systems, after a few minutes of use the SIM card is not detected anymore. After several attempts and tests, it seems that the BG96 module doesn’t come out of VDD_SIM, CLOCK_SIM and CLOCK_RESET anymore. Is the module definitively dead? This would seem to be a big problem as it happened to me on two different modules.
If someone has already solved this problem or is having the same problems don’t hesitate to answer this topic.

2

Hi Hugo,
Pls check the image I send, follow the step to make the issue clear. If there is no signal level change in VDD_SIM, CLOCK_SIM, CLOCK_RESET of the module, pls reboot the module and measure the signal level.

image
image644×881 46.8 KB

3

Thank you frank !
It was a software problem with QSIMDET and hot swap detection. I forced the detection to 0 and it works perfectly !

4

It would be my pleasure to help you solve the problem.