Japan's Wi-Fi situation
Many foreign tourists seem to be dissatisfied with the small number of free Wi - Fi spots in Japan. On the one hand, it seems that the penetration rate of Japanese Wi-Fi is low, but on the other hand, each company firmly manages the network by the "Provider Liability Limitation Act" as a background of the small number of free Wi-Fi services. It may be said that this phenomenon is unique to Japan, which is highly security-conscious.
However, recently free Wi-Fi for foreign tourists is on the increase, and there are also smartphone applications for public free Wi-Fi connection including "Japan Connected-free Wi-Fi" and "TRAVEL JAPAN Wi-Fi" (both support English, Simplified Chinese, Traditional Chinese, Korean, etc.). In both cases, when you download the exclusive application and register it by your e-mail address or SNS account, you can use the Internet at free Wi-Fi spots throughout Japan.
For those who want to use Wi-Fi in a wide range, including on the move, Wi-Fi router rental service that we can rent at the airport counter is recommended. With this, you do not need to find a place to connect to Wi-Fi, which is very convenient. If you make advance reservation, you can rent a Wi-Fi router that allows you to use multiple terminals concurrently at high speed communication of 4G standard at around 1000 yen a day. Receipt and return can be made at the main airports and can be done at the counter of the accommodations, etc. by delivery service (separate fee for both reception fee and return charge).
Another way is to purchase a prepaid SIM card and use Wi-Fi. The price of SIM dedicated to data communication is from around 2,000 yen; it can be purchased in the airports, etc. of Japan. Although it is relatively inexpensive and can be used in a relatively wide range which is comparable to router rental, you may be confused with the initial setting, and due to its small data capacity, communication is completely stopped if you exceed the limited data transfer usage.
Free Wi-Fi is free and easy to use, although its locations are limited. Wi-Fi router rental can be almost surely used anywhere. Prepaid SIM is limited in capacity, but can be used in a wide range and is inexpensive. Please consider the service to be used, assuming how much traffic you will need during your stay in Japan.