When did android bring mouse cursor support?

It can be Done if only when your mobile phone supports OTG !

What is OTG ?

USB On-The-Go

OTG stands for USB On-The-Go. It is a specification that was first used in late 2001. It allows USB devices like tablets or smartphones to act as a host so that other USB devices like digital camera, mouse or keyboard could be connected to them.

Settings of OTG in your android !

Choose the option and turn it on.

Connecting a mouse through an OTG 

Connect your mouse with the adapter and plug-in to your ANDROID.

And finally the cursor of mouse will appear on the mobile screen.