Hello im working on quectel ec200 module facing one issue on powerup module1 : RDY
+CFUN: 0
+CPIN: NOT READY
module2:RDY
+CFUN: 1
+CPIN: READY
+QUSIM: 1
+QIND: SMS DONE
+QIND: PB DONE module 2 was able to detect sim on powerup but module 1 was not able to detect sim ,for sim detection im following this steps at+cfun=0 ,at+cfun=1 than only i can detect cpin ready both have same firmware .may i know exact reason for this behavior .