1. Format the text to add some verve to your messages
2. Make your messages disappear
3. Star a message so it's easy to find later
4. Clear out storage, and see who you talk to the most
5. View message details
6. Mute a conversation
7. Hide your last seen status
8. Disable read receipts
9. Don't save photos, videos by default
10. Use WhatsApp on a computer