How to switch off the last seen option on whats app

Whats app is the most popular chatting application these days. Not only for users who want to chat and also who wants to share things with friends in a private mode. Facebook is too populated and it is tough when your parents can see you what are you doing.
So, to make whats app more private and if you don't wanna show how late you are at whats app with your buddy, then do the following -
Switch off the last seen option in whats app - 

• Go to the setting option whats app .
• Then click the Account option.
• click on privacy.
• click last seen option.
• switch it to nobody.

And from onwards nobody can know when you are offline and when you are online.

Download whats app here