Facebook Messenger is now open to everyone ; even those without a Facebook account! Just like whatsapp , all you need is just your phone number.
How it works :
On the Messenger welcome screen, you will now see an option that says “Not on Facebook?”From there, you can sign up with your name, phone number and a photo.
Right now , this feature is restricted to Citizens of Canada, the United States, Peru and Venezuela. A global rollout is expected soon.