Today at Mobile World Congress Mozilla announce the ZTE Open which will be the first phone running the new Firefox OS. Now this is only the first of many that will be running the new Firefox OS. This is a phone with budget in mind running a Cortex A5 based Qualcomm processor with 256 MB of ram and 512MB of storage with an expandable SD slot. The Open features a 480 x 320 screen with a 3.2 megapixel camera. Engadget was able to get hands on with the device at Mobile World Congress. Check it out.