Here are Following Hidden Secrets of whats-app in this video
10# How to Protect your whats app account from others?
09# How to hide status of message reading ?
08# How to change font styles in whats app ?
07# How to share location in whats-app with your friend ?
06# How to setup two step verification in whats app?
05# How to highlight a chat ?
04# How to save maximum data by data saving mode?
03# How to use whats-app business and its features ?
02# How to use whats-app on PC ?
01# How to delete whats-app account?

Whatsapp Status :   Show Only old last seen - whatsapp trick