Asynchronously lists the SIM slots available in the Modem.
The returned array contains one element per slot available in the system; a Sim in each of the slots that contains a valid SIM card or null if no SIM card is found.
When the operation is finished, callback will be invoked in the <link linkend="g-main-context-push-thread-default">
thread-default main loop</link> of the thread you are calling this method from. You can then call
list_sim_slots.end to get the result of the operation.
See list_sim_slots_sync for the synchronous, blocking version of this method.
| this |
A Modem. |
| cancellable |
A Cancellable or null. |
| callback |
A TaskReadyCallback to call when the request is satisfied or null. |
| user_data |
User data to pass to |