The EC25-EU does not detect the other SIM, when switching between SIM1/2 by means of switching the connection between modem and SIMs. This often is quite persistent, not even reboot of router with EC25 installed sometimes helps. Only removal of SIM2. My question: When/how is the SIM detected by the EC25 ? I can toggle modems power or reset PIN, and I can use AT+CFUN=1,1 . Which method is the best, to force the EC25 to verify SIM ?
Execute instructions sequentially
AT+CFUN=0
AT+CFUN=1
AT+CPIN?
Observe whether the SIM card can be recognized