AT&T Galaxy S8 What is this button?

[Dirtpuppy]

So if you have multiple apps open and you tap recent apps, the screen will minimize the first app with the subsequent apps indexed behind it. In the top right of the first app theres a greyed out button that looks like a 'minimize' button with two arrows. What is the purpose of this button? I only ask since it logs me out of certain apps when I hit that button instead of just maximizing the app to full screen which I think its intending to do.

 

[eric002]

So if you have multiple apps open and you tap recent apps, the screen will minimize the first app with the subsequent apps indexed behind it. In the top right of the first app theres a greyed out button that looks like a 'minimize' button with two arrows. What is the purpose of this button? I only ask since it logs me out of certain apps when I hit that button instead of just maximizing the app to full screen which I think its intending to do.

One button is to go into multi window mode. The other option I believe is to focus the multi window mode on a specific part of an app.

 

[munnarg]

It's the pop view button.

 

[Dirtpuppy]

Hmm. I understand the Snap window (square with dots on top and bottom; I understand the Pop Up view (2 blocks on top of each other), but this one is below those on the app window itself. Its a greyed out circle with a box and two arrows. The arrows change direction to differentiate maximize and minimize. I want to know why it logs me out of apps.

 

[smooth4lyfe]

Hmm. I understand the Snap window (square with dots on top and bottom; I understand the Pop Up view (2 blocks on top of each other), but this one is below those on the app window itself. Its a greyed out circle with a box and two arrows. The arrows change direction to differentiate maximize and minimize. I want to know why it logs me out of apps.

I think that button you are referring to allows apps to take advantage of the full screen of the phone. If you click it once that app will shrink a bit and you will see black bars at the top because its not taking advantage of the full screen. When you click it again, the app gets bigger and fills the whole screen now

 

[Dirtpuppy]

Thanks @smooth4lyfe! I see it now.

 

[tcdude]

I think that button you are referring to allows apps to take advantage of the full screen of the phone. If you click it once that app will shrink a bit and you will see black bars at the top because its not taking advantage of the full screen. When you click it again, the app gets bigger and fills the whole screen now

Yes exactly