This API is available on Firefox OS for internal applications only.
Summary
The onstksessionend property specifies an event listener to receive stksessionend events. These events are notified whenever STK Session is terminated by ICC.
Note: MozIccManager inherits from the EventTarget interface, so it's also possible to listen for events by using the addEventListener() method.
Syntax
navigator.mozMobileConnection.icc.stksessionend = funcRef;
Where funcRef is a function to be called when the stksessionend event occurs.
Specification
Not part of any specification.