Mozilla launches ad blocking for Firefox on iOS

Mozilla is officially launching ad blocking for Firefox on iOS today, after testing the feature over the past few weeks. The new built-in option will block most third-party ads and trackers before they load on an iPhone, reducing bandwidth use and decluttering mobile websites. Mozilla is using Apple's WebKit Content Blocker technology and the EasyList filter to block ads in Firefox on iOS, so you won't need to download and install a separate extension to get it working.