V4.5 or Later
- Send at least one message (if not done so already).
- Swipe the message to the left.
- Tap 'Edit Message'
- You can change:
- Message text.
- Incoming or Outgoing.
- User (if in a group chat).
v4.4.5 or Earlier
Editing already sent messages was not possible. Only were able to delete a message.
Customer support service by UserEcho