What is Chat messenger?
Now a days, we are all using one or other kind of personal chat messenger like WhatsApp or Signal etc. We are using this application to send message to individual or to group. We can send text message or media messages (image, video, document etc.).
Functional requirements
We will discuss and design below features of chat messenger.
- Send text message (One to one)
- Ack of Sent, Delivered and Read receipts
- Last seen of an individual
- Send media message
- Profile management