Article: Firefox Focus is a free version of Firefox for iPhone and Android smartphones; it has a built-in ad blocker which will prevent most pop-ups and other egregious forms of advertising from appearing. Firefox Focus is not available on Windows or Mac computers. To install it, open the {"smallUrl":"https:\/\/www.wikihow.com\/images\/5\/55\/Iphoneappstoreicon.png","bigUrl":"\/images\/thumb\/5\/55\/Iphoneappstoreicon.png\/30px-Iphoneappstoreicon.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of an iOS icon.\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a><br>\n<\/p><\/div>"} App Store (iPhone) or {"smallUrl":"https:\/\/www.wikihow.com\/images\/1\/1e\/Androidgoogleplay.png","bigUrl":"\/images\/thumb\/1\/1e\/Androidgoogleplay.png\/26px-Androidgoogleplay.png","smallWidth":460,"smallHeight":531,"bigWidth":"26","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of an Android icon\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a><br>\n<\/p><\/div>"} Play Store (Android), then do the following:   iPhone — Tap Search, tap the search bar, type in firefox focus, tap Search, tap GET to the right of the Firefox Focus icon, and enter your Touch ID or Apple ID when prompted.  Android — Tap the search bar, type in firefox focus, tap the "Search" icon, and tap INSTALL under the Firefox Focus heading. Once it finishes downloading, tap OPEN in your app store, or tap the purple-and-white Firefox Focus app icon. It's in the upper-left corner of the screen. Since Firefox Focus both includes and activates by default an aggressive ad blocker, you'll be able to browse without having to worry about pop-ups.
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Understand how to use Firefox Focus. Install the Firefox Focus app. Open Firefox Focus. Tap Skip. Browse normally.