Hi, I’m using an RM520N-GL cell modem and I am using the QSIMSTAT and QUIMSLOT commands to verify SIM card status but I am seeing mixed results. The process I follow to check SIM card status is to perform QUIMSLOT=1, followed by QSIMSTAT, then QUIMSLOT=2 and QSIMSTAT. This process should let me check both SIM cards to verify their presence, however, the results are not consistent and often will report falsely that either one of the SIM cards is not present. What am I doing wrong that the SIM presence is being reported incorrectly?
Dear @dooglas77
Please share your test AT commands and firmware version.
After change the SIM slot, SIM card have initialization.
