Calling and Camera in Background

Hello everyone,

In one of my project I want to implement camera and calling functionality in background.

This means I want to capture the images from front and rear camera without opening the view of the camera. Is it possible to achieve in Ionic using camera plugin?

Secondly I’m using call number plugin to call a specific number but when the user presses the button the app view is shifted to ‘Native Phone Calling’ view.
What I want is when user presses the button, calling functionality is done in the background.

So anyone here knows how am I able to customize the plugins both in Android and iOS?

Any help will be highly appreciated.