In Hotel Ryumeikan Tokyo, various services are ready to serve foreign guests. Rental cell phone is one of them. You can rent cell phone at the hotel, and return it at the airport. Cost will be charged on later days so you will need no cash expenses. You can also have your own number, so for the time when you take contact with your friends in Japan, for your business purpose, and to call your home town, cell phone is available for any occasions. English support service is also available for 24hours.