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Japan
日本

Opensignal reports and analyses are the definitive guide to understanding the true experience consumers receive on mobile and broadband networks.

Opensignalのレポートと分析はワイヤレス・ネットワーク・ユーザーの真の体感を理解する為の決定的ガイドです
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Our NTT docomo users see the most resilient network experience in rural parts of Japan

By Robert Wyrzykowski, May 2025

Opensignal has explored the experience of our Japanese users in Q4 2024 and Q1 2025 across several key metrics to quantify the scale of the rural-urban gap in mobile experience.

Slow but steady: The quiet growth of brand MVNOs

By Robert Wyrzykowski, April 2025

Opensignal is analyzing the network and market performance of brand MVNOs, compared to MNOs. The MVNOs see sometimes inferior mobile network experience but are still gaining subscribers from MNOs, due to the factors subscribers value in their market choices.

Mobile Network Experience in Konohana Ward, Osaka — World's Fair

By Robert Wyrzykowski, April 2025

Opensignal looked at the mobile network experience of our users around Osaka’s Konohana ward, where the World's Fair will take place. SoftBank comes first for Download Speed Experience, 5G Availability and Consistent Quality.

Japan, April 2025, Mobile Network Experience

By Robert Wyrzykowski, April 2025

au leads the national award count in Japan, with 10 recognitions won outright and one jointly. NTT docomo secures three awards outright and one jointly. Rakuten Mobile wins two awards for upload speeds, while SoftBank takes home 5G Availability.