My phone was working perfectly yesterday however suddenly as I woke up this morning it appeared to be shut off no idea how it manged to shut itself off. However, once I switched on it showed the Sony Ericsson phone name blinking on and off the screen. I took the battery out after switching it off and on but it didn't seem to work. I charged for a while but still I have no idea what is wrong with. My phone will not even switch itself off when I press the switch off button.