How to Hide contacts whatsapp

Every phone number that has been registered in the WhatsApp App will automatically be visible when we open the app.
And when we want to hide the WhatsApp contact seems to be difficult, because in the WhatsApp app itself does not provide a feature to hide contacts.
But if to hide WhatsApp contact is really very we need, then there is a little trick that is easy enough to do it.
In this short tutorial video I practice, an easy way to hide WhatsApp contacts.
Congratulations