HIDE YOUR WHATSAPP LAST SEEN STATUS
Unlike the iOS whatsapp users who can change their setting by simply going to Settings > Chat Settings > Advanced and set Last Seen Timestamp to Off.
Android users don’t have the option to hide their last seen or last section online which for
some whatsapp users is not a good idea.
So this tutorial will help you learn how to hide your whatsapp last section.
Follow this simple steps to hide your status
Download this third party app called Hide WhatsApp Status.
Step 2:After Download lunch the app.
The app disables your WiFi and data connection when you open WhatsApp.
Once you exit the app, your WiFi and data connections are reactivated,
WhatsApp will sync, and your messages will be sent.