I am using external physical SIM(UIMS=0) on manOH Red board with Sierra RC7611, but for some reason RC7611 is not detecting external SIM. However I am able to see embedded SIM(UIMS=1) on RC7611. Also we tried with different physical SIMs, none of them worked in the slot.
See AT command response below:
Manufacturer: Sierra Wireless, Incorporated
Revision: SWI9X07H_00.03.03.00 2bb7a4 jenkins 2020/04/15 07:57:29
IMEI SV: 14
+CME ERROR: SIM not inserted
Does anyone know what could be issue? Hardware? or Sierra Module?