Google Translate is perhaps the most renowned translation services, perhaps because it supports 80 languages. You can say words or phrases as well as use text input. It is also possible to take a picture of text and the app will translate it for you. An added feature for those of you that are running Android 2.3 or above is the offline function, which enables you to translate on the go, without the need for an internet connection - a must if you are on your travels.