I have Sony Ericsson Xperia X10 Mini with the Android Gingerbread version, now the problem is the Touch screen is not responding properly which in sense the upper half is alright that is whatever I try to change settings or so it works for the upper half but in the the other half no matter how many times I touch, tap or drag nothing works at all. What is the problem? Is it a software issue with Android OS or Hardware? Can you please help me to fix this problem?