WhatsApp isn't directly available on Firefox OS, but you can still use a WhatsApp client on your device or chat with friends using Facebook or LINE.
The Firefox Marketplace has apps designed for your Firefox OS device. We'll show you how to find and install them.
This article explains how to clear the browsing history, the cookies and stored data on the Firefox Browser on Firefox OS.
The Marketplace is a store that features apps designed for any device that runs Firefox OS, Firefox for Android or Firefox desktop.