TOKYO - NTT Docomo Inc. said Wednesday it had fully restored its 5G standalone mobile service following disruptions across Japan.
The major telecommunications carrier said earlier Wednesday that voice calls, data communications and text messaging on the high-speed service, known as 5G SA, had been unstable since around 10:34 a.m.
The company said it confirmed that the service was fully restored as of 7:17 p.m. after it earlier advised that customers still experiencing problems to restart their phones or turn airplane mode on and off.
It had found no evidence of unauthorized access or a cyberattack and said congestion in switching equipment caused the problems.
The company said its other 5G and 4G services, as well as mobile services offered by other businesses using NTT Docomo's network, were unaffected. Emergency calls were also unaffected.
Last week, the company experienced a 14-hour disruption to the 5G SA service, affecting 1.5 million customers who had signed up separately to use the service.
