Phones running Mozilla's Boot To Gecko (B2G) Linux-based operating system will reportedly go on sale in Brazil on Telefonica Vivo's mobile networkin late 2012.

Brazilian tech blog Ztop broke the news but had no much information about the new hansets.

Mozilla's B2G aims to be an open rival to Google's Android. It has been designed under the same philisophy Mozilla has folowed for the development of the Firefox browser: Using strictly official standards and give people more control over what their phones do and the applications they run. B2G is aimed to pursue the goal of building a standalone operating system for mobile devices that would run applications primarily on the Web.

Mozilla hopes to be able to deliver a framework that will allow developers to rewrite apps for each operating system such as iPhone's iOS, Android, and WP7.

B2G's goal appears similar to one that Google cited when it initially started work on Android. The OS is actually using parts of Android, after all.