It is a wholly owned subsidiary of Japanese e-commerce giant Rakuten.

In December 2023, it expanded into Europe launching a network in Germany.

Rakuten Mobile and German telecommunications company 1&1 launched a mobile network based on Open RAN technology in December 2023.

[10] Rakuten Mobile launched its cellular service in Japan (which was LTE) in April 2020 and with this, it became the 4th telecom operator in the country.

[11] Rakuten mobile started rolling out its 5G service in October 2020 in selected regions of Japan.