how to increase backgroundTimeRemaining

Question

how to increase backgroundTimeRemaining so because of that my application will get remain in background ,if you have any other way to run program in background please tell me .... other wise i want my application wake after call connected or disconnected in background .... without coming it on foreground ....

suggestion appreciated ...

Answer 1

This is fortunately not possible.

Answer 2

Executing Code in the Background

Specifically the section entitled Implementing Long-Running Background Tasks