I would like to manage a double sim, so that I can switch between two different operators, i.e. when the signal is too low.
In order to to that I used a switch that moves the SIM-IO and the SIMPRES IO from one sim to the other.
The switch can be managed by a gpo.
If I switch the SIM the modem cannot realize that something actually changed, and sometimes crashes.
It seems that, although I use the SIMPRESS directly (or drived by a gpo, in series after the simpress wire ) the modem realize that one sim is present, regardless by the value of the simpress itself.
How the modem realize that a sim is inserted and when is removed? (ADL_SIM_EVENT_INSERTED and ADL_SIM_EVENT_REMOVED events)?
I think that I need to “switch off” the sim, switch the SIM-IO and the SIMPRESS on the other sim and then “switch on” the sim. Is there any AT command that let me force the reinit of a sim, without resetting the modem?
Thank you very much for any hint.
I use a 6.02.02 OS on a R71a01gg.Q2686H.