What is meant by uniqueScreenviews in Google Analytics for Android?

Question

Android

Trying to understand? how does google analytics work for android apps but not sure? what is meant by screenviews and uniqueScreenviews (in the case of Automatic Screen Measurement ).
If the same user saw the same screen ( activity ) 2 times (perhaps with different content) is it a unique view ( uniqueScreenviews ) or not?
If the same user viewed the same screen 2 times but with the same content (for example, switched to another app and then back to mine), would that view be counted twice in screenviews and once in uniqueScreenviews ?
And if the same user views the same screen on two different devices (phone and tablet, for example) - is this how it counts? Unfortunately, I can't find such details
in the documentation .