Science & Tech · Big Tech & Internet · 15 hrs ago
NTT Docomo says most 5G SA service restored across Japan
NTT Docomo restored most of its 5G standalone service across Japan after disruptions on Wednesday.
The company said calls, data and text messages became unstable on the service from around 10:34 a.m.
Some customers still had problems, and Docomo advised them to restart their phones or switch airplane mode on and off.
The cause is still under investigation, and the company said it had found no evidence of unauthorized access or a cyberattack.
Other Docomo services and emergency calls were unaffected, as were services from other businesses using its network.
The disruption follows a 14-hour 5G SA outage last week that affected 1.5 million customers who had separately signed up for the service.
NTT Docomo said it had restored most of its 5G standalone mobile service after disruptions across Japan.
Some customers were still experiencing problems, and the company said it was working to fully restore service.
Voice calls, data communications and text messaging on 5G SA had been unstable since around 10:34 a.m. Wednesday.
The company said it was investigating the cause and had found no evidence of unauthorized access or a cyberattack.
Other 5G and 4G services, partner businesses’ services using its network, and emergency calls were unaffected.
- Who
- NTT Docomo and customers using its 5G standalone service.
- What
- The company said most 5G SA service had been restored after disruptions, though some customers still had problems.
- When
- Wednesday, November 11, 2026. The disruption began around 10:34 a.m.
- Where
- Across Japan.
- Why
- The cause was under investigation; NTT Docomo said it had found no evidence of unauthorized access or a cyberattack.
This story does not have two clearly opposing sides.
NTT Docomo experienced a 14-hour disruption to its 5G SA service.
Voice calls, data communications and text messaging on 5G SA became unstable.
NTT Docomo said it was still working to fully restore service.
The company said most 5G SA service had been restored, although some customers still had problems.
- Service
- 5G standalone (5G SA)
- Disruption began
- Around 10:34 a.m. Wednesday
- Restoration status
- Most service restored; some customers still affected
- Cause
- Under investigation; no evidence of unauthorized access or a cyberattack found
- Previous disruption
- 14 hours last week; affected 1.5 million customers who had separately signed up for the service