Earlier today (Hong Kong Time) Facebook rolled out its shiny Messenger. Due to country restriction mobile app is only available for US users. I was lucky enough to get a copy of the app (apk file) from XDA Forum. Time for the test dive!
When you first run the app it requires user to enter their Facebook login info. Once authentication was completed user will be directed to the Messages screen which basically is what you see in the Messages section on Facebook (web version). All previous messages dialog will be shown in here.
User can create new (chat) message using the top right corner icon. Once message is created, simply enter name(s) in the TO field & select the participants, your (group) chat is created and time for chatting.
** It seems like you can send message to user using Facebook chat / message or you can send a direct message to the his/her mobile number (which pull from user's mobile device contact list)
I yet to be able to verify the above, additional testing will be needed.
Friend of mine in US happens to be one of the early adopter for Facebook Messenger and already have the app installed on his iPhone. I try to send him a message using the app as a test run and everything worked as expected
|Chat dialog is like any other messaging service & it also allow user to send pictures to each other.|
**If you happen to have Facebook (web) open on your computer and receive message from other users, message will go to BOTH mobile app & web at the same time.
Other then photo exchange between users, you can also locate where the other participants' location using the Map function. (Can be creepy in a way). User can turn off location sharing in the global settings, however by default your location is being share by the app.