Mozilla is developing an open-source operating system for smartphones and tablets that supports Do Not Track. The Linux-based mobile OS is designed to bring the (comparatively) rigorous privacy standards of the World Wide Web to smartphones. Mozilla has already cut a deal with Spanish telecom provider Telefonica to bring a B2G device to market before the end of the year. There is no mechanism for ensuring that the apps you access and the sites you visit will honor your request for privacy.”]
Source: https://www.csoonline.com/article/2131261/mozilla-at-work-on-mobile-do-not-track.html