This is my first trip to Japan in 2 years and I have only 3 nights and 4 days in Tokyo this time. So I decided to rent a cell phone to make a better usage of my time with my friends.
If you are arriving in Narita Tokyo International Airport, you can rent it from several different companies.
Here is the list.
JAL ABC Rental Phone is giving a special rate at this time, so I decided to rent it from them. If you request, they can send you possible cell phone number a day before and I already got it from them by Email! So I could Email it to my friends in Tokyo.