Google Translate

Google Translate is bloatware on most Android devices but it's still the best translation app out there. It does everything you could possibly need from a translation app plus a few things you didn't think were possible. 

The type-translation, picture translation and handwriting translation features all support 90 languages. The two-way automatic voice translation feature is limited to 40 languages but is very impressive giving you instant translations for face-to-face conversations. 

The most interesting feature of Google Translate is the instant camera text translation, which instantly translates different texts using the camera without taking a picture. If it’s in writing, Google Translate will instantly translate it, no matter the font, style or color of the text.