I have bought new Sony Xperia S. It worked fine with me for 2 days. Suddenly on 3rd day, my battery drained completely. Whenever i turn it on after enough charging, it shows 100% charge, then suddenly it dropped to 0%. And when i try to charge it when its off, then it shows Red Light. I even tried to update the software from PC Companion , but it says u must have 50% battery charge, and at that time my Battery was showing 100% on screen. I am new Xperia User. I dont know whats the problem and exactly how to fix it. Kindly help me in this regard. Thanks P.S. Now currently only Sony Logo is coming and going, and rest i couldn't be able to see anything on Screen.