If we want to talk to someone on the most important instant messenger, Whatsapp, we simply add the number in our address book and voila!
Currently, there are many tools to talk without adding on the agenda. Please note that there are a few texts about it.
According to Infobae site The first option is to go to the browser to access the https://wa.me/phonenumber direction in which the last part must be replaced by a telephone number, always using only local code number, ie, with no signs as + or brackets.
Another option is to write a phone number without a division, the page that will display the legend Mensajea (+ number) to open Whatsapp. It is necessary that the phone is registered to the application.
Another alternative chat Click, Easy Message or Direct Message for WhatsApp.