How to Use Quick Reply in Android 7.0 Nougat
Step 1. Pull down the notifications panel when you receive a message.
Step 2. Tap the notification to expand it and you will be able to read it.
Step 3. Tap the reply button under the message text.
A text input field will appear under the notification where you can type your reply.
Step 4. Tap the send button at the bottom right of the notification to send it. That’s all it takes.
Note: Quick reply is only meant to work with messaging apps. This means apps like Facebook Messenger, Whatsapp, and Viber will all be able to add support for Quick Reply but apps like Gmail will not. The feature doesn’t support email apps which is disappointing to say the least.