Firefox OS is a new mobile operating system. . Firefox OS is designed to provide a “complete” community-based alternative system for mobile devices, using open standards and approaches such as HTML5 applications, CSS, and JavaScript. In Firefox OS, HTML5 apps can directly control phone hardware and key functionality — for example making the phone vibrate, placing phone calls, and sending text messages. It's also optimized for low-end hardware and will be provided to manufacturers for free, helping these companies produce mobile devices that balance a high degree of functionality with low cost. It competes with proprietary systems such as Apple's iOS, Google's Chrome OS and Microsoft's Windows Phone,]as well as other open source systems such as Android, Jolla's Sailfish OS. History of Firefox OS After Mozilla's well-known desktop browser, Firefox, and screenshots began appearing in August 2012. In February 2013, Mozilla announced plans for global commercial roll-out of Firefox OS. Mozilla announced at a press conference before the start of Mobile World Congress in Barcelona that the first wave of Firefox OS devices will be available to consumers in Brazil, Colombia, Hungary, Mexico, Montenegro, Poland, Serbia, Spain and Venezuela. Mozilla has also announced that LG Electronics, Huawei and TCL Corporation have committed to making Firefox OS devices. In December 2013, new features were added, including conference calling, silent SMS authentication for mobile billing, improved push notifications, and three state setting for Do Not Track. The Firefox OS will be introduced in Poland, Colombia and Venezuela.and there are other contries in firefox OS will released shown in map also. 3 Major software Layers 1.Gonk: 2.Gecko 3.Gaia These three software layers are used to develop the Firefox operating system for mobiles. All have their different task to perform. Or we can say that Firefox is a combination of these three software’s. Firefox OS coming to new devices this year: Mozilla, the non-profit organization behind the Firefox browser, has announced plans to bring its new mobile operating system to a wider range of devices this year. Mozilla also announced that it had struck a deal with Panasonic to develop next-generation smart TVs that run Firefox OS. Yuki Kusumi, Director of the Japanese manufacturer's TV Business Division, said the partnership "will take consumers to a whole new level of interaction and connectivity inside and outside their home". Finally, Mozilla launched the Firefox OS 'contribution program' - a project to help developers put together a tablet version of the operating system by providing them with resources and reference hardware. ZTE Open : The ZTE Open is very much an entry-level handset. Its appearance is reminiscent of the HTC Wildfire, although our sample is considerably more orange. There is a blue version available too, but ZTE is currently only selling the orange one in the UK.