Three of the four companies — NTT DOCOMO, KDDI au, and Softbank — are established carriers, while the fourth, Rakuten Mobile, is relatively new. All four were assigned 5G spectrum by the Japanese government on April 10, 2019.
Three of the four companies — NTT DOCOMO, KDDI au, and Softbank — are established carriers, while the fourth, Rakuten Mobile, is relatively new. All four were assigned 5G spectrum by the Japanese government on April 10, 2019.