Has anyone used the Sony Xperia T with Android versions : 4.1; 4.2 ; 4.3? I currently use the factory ( 4.0.4 ) and I wanted to raise my system on some of the above so I need your help . I wonder how the phone works with these versions , whether it's better or worse , what is the battery and the like , because if I do I can not go back to 4.0.4 . I heard that 4.3 destroys the battery and the system so that I do not think I'll use it. Your experience , advantages and disadvantages ?