It is important to understand why it is important in the first place. Suppose you are a member of any friend's group chat which is 24×7 active. There is hardly a pause as the messages keep coming on it all the time. Now in between of all the conversation that is going on, your one friend has asked you if you could meet him today. His message is followed by your friend's good morning message, then your friend's smiling photo, next to some more good morning messages and so on. How do you reply to only his message then?
This is where the quote reply functionality comes to use. It lets the other chat group members know that you are in conversation with one particular member and that others should comment only if needed.
There are two ways of replying to a chat- by long pressing or by swiping right. The long pressing method is quite old and many of us still follow this method to reply. You simple long press the message to which you want to reply and tap on the arrow icon above. A reply text box will appear. Just type your reply and tap on the send button.
Second is the swipe to reply. The feature has been on IOS devices for a very long time. With a swipe to reply, you can reply to a chat in a comparatively lesser amount of time. To use the functionality, simply swipe right the message to which you want to reply. A text box will appear. Just type your reply and tap on the send button.