A lot of portable wifi router companies advertise that you can enjoy unlimited data during your stay in Japan. wifi-rental-japan also introduces to customers that you can use unlimited data with our wifi router. However, there is a rule of using unlimited data and same thing applies to most of the wifi routers in Japan.
CHECK AREA MAP
wifi-rental-japan provides Y mobile 305ZT to our customers. Although this router is popular in Japan and many wifi rental stores handle it, it is impossible to cover every single area in Japan. For instance, if you hike up mountain and try to connect to the internet with wifi router, it will not work at all. In similar cases, it will not work as well if you are traveling countryside of Japan. Please refer to the following map.