Use Story:

This feature allows you to start a conversation with anyone, even if you haven’t stored the other’s phone number before

Step 1

Click "Inbox"

Step 2

Click on the input box and enter the mobile phone number of the person you need to talk to (note: the country code must be added, such as +85292020368, where +852 is the country code)

Step 3

Click on the search result to start the conversation with the new contact