please its a request to dont mark my question as irrelevent ,duplicate,etc
i want to clear the point
in one of stackoverflow answer--> https://stackoverflow.com/a/57018094/12553303
this user saying that
The job given to the IntentService would get lost when the application is killed
and in one of the site --> https://guides.codepath.com/android/starting-background-services
this blog says -->
The IntentService class used to be the way for running an operation on a single background thread. IntentService runs outside the application in a background process, so the process would run even if your application is closed.
Thanks need clarification