Why have my phone refuses to minimize?

[Simplygifted]

After seting my phone it have refuse to minimize in other for me to see other pages, what will I do?

 

[B. Diddy]

Welcome to Android Central! Which phone? What do you mean by minimizing? Are you talking about the Recent Apps screen, that shows all of your recently opened apps? Or are you using the browser and want to look at all open tabs?