This app helps you: - 1-click open built-in service test menu on Sony Xperia devices (includes: Touch screen, Display, Speaker, ...) - 1-click open phone settings. - 1-click open device info - Check your Sony Xperia device performance NOTICE: By using this app you are sure of what you are doing. Developer will not be responsible for any damage that may occur to your phone as a result of improper use