I am following Application Design Note 1.0 to attach the BC66NA to the network if the SIM is not registered.
- If CEREG returns a not registering or not registered status
- Set CFUN=0 and AT+QCSEARFCN, then restart module (I am restarting using reset pin)
- Set Band to 0 i.e. auto and reset module (using reset pin)
- Set APN (AT+QCGDEFCONT…) which is returning OK and reset module (using reset pin)
- At this stage I am checking again the sim state using AT+CPIN and if Ready I am checking the SIM Registration (using AT+CEREG) but the SIM remains in a Not Registering state.