Hi Denis and Marcel,

As suggested by Marcel over ConnMan mailing list, I would like to save 
CDMA modem credentials like it is done for GSM modem contexts.
However, for GSM modem we use IMSI to save the contexts. So I could use 
CDMA Modem Serial to save but if we put different SIM into the same 
modem, we will load wrong credentials.

If this solution is good for you anyway, should I:

         1) modifiy the query_serial_cb() like this:

static void query_serial_cb(const struct ofono_error *error,
                  const char *serial, void *user)
  {
      struct ofono_devinfo *info = user;
+    struct ofono_atom *cdma_atom;
+    struct ofono_cdma_connman *cm;
      DBusConnection *conn = ofono_dbus_get_connection();
      const char *path = __ofono_atom_get_path(info->atom);

      if (error->type != OFONO_ERROR_TYPE_NO_ERROR)
          return;

+    cdma_atom = __ofono_modem_find_atom(__ofono_atom_get_modem(info->atom),
+                        OFONO_ATOM_TYPE_CDMA_CONNMAN);
+
+    if (cdma_atom != NULL) {
+        cm = __ofono_atom_get_data(cdma_atom);
+        ofono_cdma_connman_load_credentials(cm, serial);    // similar 
to gprs_load_settings()
+    }
+

     info->serial = g_strdup(serial);

     ofono_dbus_signal_property_changed(conn, path,
                         OFONO_MODEM_INTERFACE,
                         "Serial", DBUS_TYPE_STRING,
&info->serial);
}

     or 2) Implement a devinfo API to return serial, like the IMSI is 
returned by SIM atom?
             Thus, I would have gprs-like implementation.

Thanks for your help.

Kind regards,
Guillaume