If you'e just moved to Japan (or if you're responsible and like to plan ahead), one of your top priorities should be getting a working phone. The data options are indispensable, especially if you want to go exploring in your first few weeks and don't want to get hopelessly lost, ending up at a convenience store trying to score some free WiFi. And you need a phone number for a lot of things, whether it be setting up a bank account or making reservations at a busy restaurant.
Here are some of the options you have:
