I have Sony Ericsson Xperia X10 with me. Well all the things are really working fine here. I have just bought this cell phone and let me tell you that it is still under warranty. Now the only thing that I want this mobile phone to do for me is record the voice calls that I am getting here. Will I have to make use of some of the application in this case? If yes then please let me know from where I can get that application. Try to be little quick with the suggestion.