WiFi Direct for File Transfer between Android Phones

I recently tried out an amazing feature named WiFi Direct for File Transfer between Samsung Galaxy Note and Samsung Galaxy Grand. Its very much faster than Bluetooth. I could transfer a video file worth 135 MB from Galaxy Note to Galaxy Grand in almost 1 minute. Its really fast. Its not required to connect to any WiFi Network to use this feature. Just turn on WiFi and click WiFi-Direct button on both phones.

In short, I followed below steps :-

1) Go to settings
2) Go to WiFi Settings
3) Enable WiFi
4) On the WiFi settings page at the bottom right corner, there is a button to enable WiFi Direct. Enable that.

Repeat the above steps on both mobiles. Consider that you want to transfer file from mobile A to mobile B.

5) Scan for devices from WiFi Direct settings on mobile A .
6) Select mobile B from the list of available devices.
7) Mobile B should accept the pairing request from mobile A for secure communication.
8) Open file explorer from mobile A and browse to the file to be sent.
9) Select the file and click share via-->WiFi Direct. 
10) Select mobile B so that file transfer can happen from mobile A to B.