How to know who has added us to WhatsApp
Particularly if you're a regular user of WhatsApp, you will see how a few weeks ago an update on where the images of the Avatar of some of our contacts do not go, his replacement, was launched iOS users see an overall picture, Avatar default face does not show any.
This change is due to a security setting that WhatsApp is starting to implement, above anyone had our phone number, could add us to your Whatsapp and view our photo within the service, this change seeks to prevent persons unknown to perform this action.
With the new update also prevent others from seeing our image of WhatsApp, we can discover which of the contacts that are on our list of Whatsapp, have we added to them.