What is Quick ball in redmi 7S?

Quick ball in redmi 7s is a special feature by which you can easily get a floating button on screen which will give you some extra buttons when clicked there you can find your imp buttons which you can use anytime. 

How to turn in quick ball on redmi 7s? 

Go to settings<Additional Settings<QuickBall and turn in on .

Dont worry you can turn it off anytime you want.

After turning on you will see a floating button click that and you can see your new button .

What button will i get in quick ball in redmi 7s?

You will get one back button, Background button, Home button, Screenshot button, and a lock button.

You can use this button anytime when that quick ball is active.