Detect SIM cards on both sim slots

Knowledge Base SIM Card
1

Our carrier board has an esim (sim1) and a physical sim (sim2)
By default the sim1 is used (esim is always “inserted”/soldered)

How can our application detect if sim2 is inserted while still being switched to sim1.

Current test procedure:

  1. AT+QDSIM? → 0 (sim1 is used)
  2. AT+QSIMSTAT? → 0,1 (sim1 is inserted)
  3. AT+QDSIM=1 (switch to sim2)
  4. < Reboot of modem for above function to take effect >
  5. AT+QSIMSTAT? → 0,0 (sim2 is not inserted)
    — If no sim in inserted in 2nd sim slot, switch back to sim slot 1 —
  6. AT+QDSIM=0 (switch back to sim1)
  7. < Reboot of modem for above function to take effect >

As you can see, if the 2nd sim is not inserted, the modem needs to be rebooted twice in order to be usable again.

2

Hi JimmyMars ,

it depend on the model of the module ,

with different module , there are the below 4 types

SSSS— single sim single standby

DSSS —double sim single standby

DSDS—double sim double standby

DSDA— Dual SIM dual active

pls let us know the type of you mdoule

3

We are using this one:
EG95EXGA-128-SGNS