1. Deactivate “Last Seen” Time stamp : If you want to disable the “last seen” time stamp for privacy concerns, you could easily disable it on your mobile device. For iPhone users, got to Settings – Chat-settings – advanced. Here, you can deactivate the last seen time stamp.For Android users, you won’t need to the above setting using the application itself. Rather, you’ll need to rely upon third party applications like “Hide the WhatsApp Status” which turns off your data connection or Wi-Fi signal the moment you launch WhatsApp. The application automatically reactivates your connection after you close WhatsApp.   2. Backup & Restore Chat : The app makes auto-backups of each of your chat, however you could do it manually as well thru Settings –