JR East launched free wifi last year on its Tohoku Shinkansen
(Tokyo-Sendai-Morioka), Hokuriku Shinkansen
(Tokyo-Nagano-Kanazawa) and Akita Shinkansen. Little by little all the trains of this line will be equipped with wifi.
In 2020, all Yamagata Shinkansen Line and all Joetsu Shinkansen Line
(Tokyo - Niigata) will be also equipped with wifi.
Learn more about the shinkansen network
Here is the message that you will receive on your device.