This Ui has different styles for the message section and the chat section which can be used while you are building a chatting application.
This has four screens each of them with some different functionality/features. One of them has a slideable chat section, other has tapped to display the message time feature. One of the message screens has a message loaded from the bottom when you are opening the messages from a particular chat.
Note:- This is only the UI for certain pages. This app does not have a backend for the chat application.