# Rakuten Mobile and KDDI roaming transition

> Live situation record from CLSTR: https://clstr.news/situations/rakuten-mobile-and-kddi-roaming-transition
> Updated: 2026-08-18T23:20:00.000Z. Sources: 7. Developments: 2.

Rakuten Mobile is transitioning its network infrastructure strategy as its roaming agreement with KDDI approaches an end in September 2026. To address potential coverage gaps resulting from the reduction of KDDI roaming services, Rakuten plans to launch a direct-to-smartphone satellite communication service in collaboration with AST SpaceMobile within 2026.

While KDDI intends to scale back roaming in urban areas where Rakuten has established its own network to manage traffic loads and promote competition, Rakuten Group CEO Hiroshi Mikitani clarified that roaming will continue after October in rural or mountainous regions where self-built infrastructure remains insufficient.

## Timeline

### 2026-08-18: KDDI and Rakuten Mobile adjust roaming agreement terms

KDDI and Rakuten Mobile are adjusting their roaming agreement, aiming to phase out service in overlapping urban areas while maintaining coverage in rural regions where Rakuten's network is still expanding.

6 sources. https://clstr.news/cluster/kddi-and-rakuten-mobile-adjust-roaming-agreement-terms

### 2026-08-11: Rakuten expands mobile network capabilities and hospitality services

Rakuten is strengthening its mobile network through satellite partnerships with AST SpaceMobile and enhancing its ecosystem with AI-driven services, while expanding its hospitality footprint in Hyogo.

2 sources. https://clstr.news/cluster/rakuten-expands-mobile-network-capabilities-and-hospitality-services

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Cite as: Rakuten Mobile and KDDI roaming transition. CLSTR, https://clstr.news/situations/rakuten-mobile-and-kddi-roaming-transition