Notice: If there is no hardware keyboard and a trackball on your Android Phone, this application only works with some functions. This application can not be used at some devices which do not implement the Accessibility Service.Text on the screen is automatically translated into other languages and the translation result is displayed in pop up.It is useful when you use a foreign language application.Menu, listing items, and input character are translated.Translation function uses Microsoft Translator. 37 languages are available.