1. Use Narico, the world’s first voice-powered airport guide app...
Looking for something to eat, shop or do? Ask NariCo (short for Narita Concierge), the Narita Airport version of Apple’s Siri or Google’s Personal Assistant. Download the app, tell your phone ‘I want to eat sushi/take a nap/buy beer’ and Narico will kindly offer you all kinds of advice. The app is available in English on both Android and iOS. If you’re just looking for flight updates or are lost inside the terminal, try the NRT_Airport Navi app, while the NariTra app will try to translate anything spoken to it into a different language – perfect if you run into lingo issues when buying something.
Find more information on the apps here