Η Mozilla plans to build an adblocker into Firefox Focus 9.0, which is scheduled to be released next month.
Firefox Focus is a browser application for mobile phones Android and iOS, and is designed with user privacy in mind, without storing passwords accesss, preventing them trackers ads and content.
In the current version of Firefox Focus, 8.1, the browser stops tracking scripts, which will block some ads that require or contain tracking scripts.
Mozilla in the upcoming version, 9.0, plans to add a full adblocker (ad blocking mechanism). The 9.0 version is scheduled to be released on February 12, 2019.