On my Q2687RD/Q2687G from time to time (e.g. once or twice per week) I receive CME ERROR: 13 (SIM FAILURE). All I can do then is a full reset (AT+CFUN=1), otherwise the device just sits there with no network attached. Looking at my logs I can say that there are no interesting events before this CME error. I’m not sure if I received any “not registered” or “searching for network” indicators after this error. Anyway, the device never registers successfully afterwards unless I reset it.
Has anyone seen errors like these? Any solutions?