## Connection Cellular interface Connection Cellular interface — client-side wrappers for the Cellular interface |

## Synopsis

    #include <telepathy-glib/telepathy-glib-dbus.h>

    TpProxySignalConnection * tp_cli_connection_interface_cellular_connect_to_imsi_changed
                                                            (TpConnection *proxy,
                                                             tp_cli_connection_interface_cellular_signal_callback_imsi_changed callback,
                                                             gpointer user_data,
                                                             GDestroyNotify destroy,
                                                             GObject *weak_object,
                                                             GError **error);
    void                (*tp_cli_connection_interface_cellular_signal_callback_imsi_changed)
                                                            (TpConnection *proxy,
                                                             const gchar *arg_IMSI,
                                                             gpointer user_data,
                                                             GObject *weak_object);

## Description

An interface for connections to cellular telephony (GSM, CDMA etc.), which provides properties and signals that aren't applicable to other protocols.

## Details

### tp_cli_connection_interface_cellular_connect_to_imsi_changed ()

    TpProxySignalConnection * tp_cli_connection_interface_cellular_connect_to_imsi_changed
                                                            (TpConnection *proxy,
                                                             tp_cli_connection_interface_cellular_signal_callback_imsi_changed callback,
                                                             gpointer user_data,
                                                             GDestroyNotify destroy,
                                                             GObject *weak_object,
                                                             GError **error);

Connect a handler to the signal IMSIChanged.

Emitted when the IMSI for the connection changes. This sort of thing is rare, but could happen on cellular phones that allow hot-swapping of SIM cards. In the case of SIM swapping, this signal would be emitted twice; the first time while the SIM is being ejected (with an empty string), and the second time after a new SIM has been inserted (assuming that the IMSI can be determined from the new SIM).

`proxy` : | A TpConnection or subclass
`callback` : | Callback to be called when the signal is received
`user_data` : | User-supplied data for the callback
`destroy` : | Destructor for the user-supplied data, which will be called when this signal is disconnected, or before this function returns `NULL`
`weak_object` : | A GObject which will be weakly referenced; if it is destroyed, this callback will automatically be disconnected
`error` : | If not `NULL`, used to raise an error if `NULL` is returned
Returns : | a TpProxySignalConnection containing all of the above, which can be used to disconnect the signal; or `NULL` if the proxy does not have the desired interface or has become invalid.

### tp_cli_connection_interface_cellular_signal_callback_imsi_changed ()

    void                (*tp_cli_connection_interface_cellular_signal_callback_imsi_changed)
                                                            (TpConnection *proxy,
                                                             const gchar *arg_IMSI,
                                                             gpointer user_data,
                                                             GObject *weak_object);

Represents the signature of a callback for the signal IMSIChanged.

`proxy` : | The proxy on which `tp_cli_connection_interface_cellular_connect_to_imsi_changed()` was called
`arg_IMSI` : | The new IMSI value. This may be an empty string in the case where the IMSI is being reset or removed.
`user_data` : | User-supplied data
`weak_object` : | User-supplied weakly referenced object

## See Also

TpConnection