Most of the leading browsers on desktop and mobile platforms offer private browsing (incognito) mode, which allows users to browse web pages without leaving any data on their device. It is important to keep in mind that the private browsing mode doesn’t hide your identity on the web. Your network admin, ISP and the visited websites can still track your visits and activities.
Moreover, while in incognito mode, you can still access your bookmarks and saved passwords. One can optionally enable installed extensions to work in incognito mode, at least in Google Chrome.
Many browsers, like Firefox for Android, offer a different browsing mode: Guest Mode. This is totally different from the Private (Incognito) mode. When you turn on the Guest Mode in Firefox on Android, it closes the your current browsing session and starts a new one. The “Guest” user would not have access to your browsing data like bookmarks, saved passwords and history.
Guest mode is the best option when you have to share your phone’s browser with someone else. After ending guest session, your previous browsing session would be restored.
Currently, Firefox on Android is the only leading mobile browser to offer guest mode feature. Chrome on desktop has recently introduced guest mode in its beta version, which should land to the regular version soon.