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Back楽天モバイル、2026年10月以降もKDDIローミングを一部継続へ
楽天モバイル、2026年10月以降もKDDIローミングを一部継続へ
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ITmedia2 hours agoBusiness2 min readJapanView translation

楽天モバイル、2026年10月以降もKDDIローミングを一部継続へ

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楽天モバイルは9月5日、2026年10月以降もKDDIローミングを一部継続すると発表した。カバーが不十分なエリアではローミングを維持し、十分にカバーできるエリアでは縮小する。これにより通信品質の維持が図られる見込みだ。

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Why It Matters

楽天モバイルは当初、2026年9月末でKDDIローミングを終了する予定だったが、カバーが不十分なエリアでの通信品質維持のため、一部継続を決定した。

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楽天モバイルが、10月以降のKDDIローミングの対応について、9月5日に改めて告知した。

ローミング契約については、現在もKDDIと「詰めの協議」を行っているが、楽天モバイルがカバーに時間を要するエリアについては、2026年10月以降もローミングを継続する。なお、楽天モバイルで十分にカバーできているエリアについては、ローミングを縮小する。

楽天モバイルは、引き続き、楽天モバイル回線のエリア拡大とネットワーク品質の向上に取り組んでいくとしている。

楽天モバイルのKDDIローミングは、当初は2026年9月末で終了する予定だったが、2026年8月7日のKDDI決算会見で、松田浩路社長は「一部のルーラル(地方)エリアについては、エリアと期間を区切ってインフラの維持に協力する」意向があることをコメントした。

さらに8月12日には、楽天グループの三木谷浩史会長兼社長が、X公式アカウントで、10月以降も一部エリアでローミングを継続する予定であることを発信するという異例の事態となった。それだけに、ローミング継続は楽天モバイルの通信品質を維持する上で死活問題であることが分かる。

ローミングを継続するエリアは未発表だが、10月以降、従来のローミングエリアで「楽天モバイルが全くつながらない」という事態はある程度防げることになりそうだ。

Open Questions

  • ローミングを継続する具体的なエリアはどこか
  • ローミング継続にかかるコストはどの程度か
  • 楽天モバイル自身のエリア拡大はいつまでにどの程度進むか

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This article was originally published by ITmedia.

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