I am using facebook messenger more then 3 year and my personal experience about this app is. Its very good for use. Its help u to send messege to your facebook friend and give you many option to enjoy your chat with your friend.its provide sticker for enjoy with your friend. Its also provide video call with your feiend and its video call Quality is very good.its also provide audio call facillity.overall its very good app by facebook for chat and more fun with friend.so go and download it.enjoy it.