Facebook Messenger is a faster way to send mobile messages to friends. With Messenger, you can send and receive messages with any of your friends around the world or anyone in your mobile contacts list. Messenger is available on iPhone, Android, and Blackberry.
Messenger lets you :
• Send messages instantly to other friends who have Messenger
• Chat with friends who are on Facebook
• Get free push notifications for incoming messages
• Add location and photos to messages
• Reach friends via text message if they don't have Messenger yet
• Access sent and received messages on both Messenger and Facebook
• Create group conversations for making plans on the go
• Add more friends to group conversations at any time
• Control alert and location settings for each conversation
As you can see the methods are very simple. You can use any of them either according to your preference, they all work.
very important : If this tutorial helped you , then Please click on the +1 button
thanks a lot for your help . Oh by the way if you don't know how to install Facebook Messenger.apk file. than you can follow this tutorial : how to install apk files in Android phones.