See the below screenshot of the app:
So now you might be thinking about how does it works right ? from now when you will try to contact with your facebook friends, instead of sending them a standard text message, you can simply turn on your "Messenger" app and send them a Facebook message. These messages will be delivered though notifications and texts as well, which means they will recieve your message either in computer or even their mobile phone too. This new app is just a new extension of the Facebook Messages so your entire messaging history including your texts, chats, emails, private messages will be available from the moment that you install the app on your smartphone.
A very new interesting feature to this app is group texting - Even you phone can not handle the group texting but this app will prove to be a great time saver for you and easily sending message to your friends. The messenger app makes texting, small groups extremly easy, you can just quickly set up a group conversation, include your location and upload images using Messenger as well.
So, the benifits of using this new mobile app in your smartphone:
1.Easy way texting to friends.
2.two in one Mobile SMS + facebook notification.
5.Sending photos to your friends.
You can use this app using your iPhone and Android
Download the messenger: