Modem SIM detection pin
When a SIM card is inserted into a card slot, it actuates a lever which enables the modem SIM Presence pin to detect the SIM card.
However, a PCB-soldered eSIM does not require presence detection because the eSIM is always present.
Therefore, we recommend your design should disable the use of the SIM detection pin. Refer to the modem Hardware Design Guide and AT Command Guide on how to do this.
If a Telit modem is unable to detect the eSIM, try disabling the hot-swap SIM feature.
Check whether hot-swap is currently enabled or not
AT#HSEN?
#HSEN: 1,0 Hot-swap is enabled for SIM slot 0
OK
Read the detection mode of the configured SIMIN pin
AT#SIMINCFG?
#SIMINCFG: 1,0
OK
Disable the hot-swap SIM feature
AT#HSEN=0,0
OK
Reboot the modem for new setting to take effect
AT#REBOOT
OK
Verify that the modem can now detect the eSIM
AT+CPIN?
+CPIN: READY
OK