There are multiple ways to delete a chat message or chat thread. Only the chat creator can remove a chat thread for all users, otherwise users are able to delete the chat thread from appearing locally within their account.
To delete a chat message
1. Tap the 3-dot menu next to the message you would like to delete.
2. Tap Delete from the pop-up.
3. Confirm by tapping Delete.
To delete multiple messages
1. Tap on the 3-dot menu in the upper corner of the chat thread.
2. Select the messages you would like to remove and then tap Delete. You can also remove all your messages by tapping Select All.
3. Confirm by tapping Delete.
To delete a chat thread from your account ONLY
1. From the Chat screen tap the 3-dot menu.
2. Select the chat thread you would like to remove and then tap Delete.
3. Confirm by tapping Delete.