To enable or disable cookies:

Open Firefox for Android. Tap the menu button (either below the screen on some devices or at the top-right corner of the browser) . Tap Settings (you may need to tap More first) Tap Privacy. Tap Cookies and select one of the following settings: Enabled: allows all types of cookies. Enabled, excluding 3rd party: allows cookies from sites you visit. This doesn't allow cookies from third parties, which can be sold to advertisers. Disabled: prevents all types of cookies from being stored on your device.