On The Go (OTG) is activated as soon as it is installed on the mobile phone, like the Plug and Play (PnP) function in the PC.
The external device can be connected to the mobile phone and enabled in the mobile phone, using an OTG cable. (e.g., mouse, keyboard, USB memory stick.)
How to use a mouse using OTG
① Connect the OTG cable to your mobile phone. (OTG cable is sold separately)
② Connect the opposite side of the OTG cable to the mouse.
③ Check whether a mouse icon appears on the mobile phone status bar.
④ Use the mouse on the mobile phone screen, using the mouse cursor.