Learn how to use Firefox on Android in Incognito mode; also known as private browsing in Firefox.
Private browsing allows you to surf the web without saving any information about your browsing and download history, cookies, form data, or search history. Browsers available for PCs have provided ways of browsing privately.
But even mobile browsers can do private browsing.
Firefox Private browsing mode will not leave any information about your browsing activities once you exit the tab.
incognito browser or private browser
To launch Private browsing / Firefox Incognito:
Launch Firefox
Tap the Firefox menu
Then tap 'New Private tab' .