How to change Aspect ratio on the KMPlayer (Android)

How to change Aspect ratio on the KMPlayer (Android) while watching a video or a movie to an aspect ratio that is conformable to your screen or monitorAspect Ratio is an image attribute or characteristics that tells the dimension (relationship) between the width and height of an Image.
The Aspect ratio is mostly rectangular, but there are square based aspect ratio.
The Aspect ratio from its name entails that it is a ratio, which is in form of mathematical ratios, that is expressed by two numbers separated by a colon, for example 4:3.
If expressed as in the form x:y, x is the width, while y is the height, that is in the form
Width: height

Below are some popular aspect ratio and where they are used:
1:1: Square form
4:3(1.33:1): Traditional television screen or computer monitor standard
16:9(1.77:1): (HDTV) High definition Television, US digital broadcast TV standard, it is the most popular aspect ratio.
21:9: In use in theaters and cinemas.
16:10(1.6:1 or 8:5): Common Computer Screen ratio
1.85:1: Widescreen cinema standard especially in the US
21:9: in use in theaters and cinemas.
2.21:1: Used in cinemas
2.35:1: Widescreen cinema standard
2.39:1: For Cinema screen
5:4(1.25:1): Early television and large format computer formats

To change aspect ratio on KMPlayer, please follow the instructions below:
1) Launch KMPlayer with the Video you want to watch and use a different aspect ratio.
2) Touch the screen of the player, on the lower right corner, you will see a symbol with two arrows (Where the orange box is). , Click, press or touch it repeatedly till it get to your required aspect ratio.