5G Data Keeps Japan Telco Revenue Creeping Up at 1.3% CAGR

Japan's telecom and pay-TV services revenue will grow at a 1.3% CAGR between 2025 and 2030, according to GlobalData's Japan Telecom Operators Country Intelligence Report published October 30, 2026. That is a modest figure. It also tells you exactly where the money is moving: 5G mobile data and fibre, while voice quietly pays the bill for everyone's OTT habits.

What is driving the growth?

Mobile data service revenue will rise at a 2.9% CAGR over the same period, making it the workhorse of the entire forecast. GlobalData attributes this to three things: rising mobile internet subscriptions, what the analyst firm calls a massive surge in data consumption, and growing adoption of higher-ARPU 5G services.

There is a commercial logic behind it. As Japanese consumers stream more digital video, operators can sell premium data plans with high-data quotas. That is the monetization route, and it is a familiar one — sell bigger pipes to people watching more video on them.

What happens to voice?

Mobile voice revenue will decline through 2030. MNOs bundle voice minutes for free into mobile plans, users prefer OTT and internet communication services, and voice ARPU keeps sliding. Fixed voice faces the same fate, with circuit-switched subscription losses and falling fixed voice ARPU dragging revenue down.

Fixed broadband goes the other way. GlobalData expects moderate revenue growth, built on robust fibre subscription gains. The government is doing its part, pushing nationwide fibre expansion with a target of 99.9% fibre coverage by 2027.

Neha Mishra, Telecom Analyst at GlobalData, said: "The growing adoption of FTTH broadband services in Japan can be attributed to the rising demand for high-speed connectivity, the government's nationwide fibre expansion push such as the government's aim to achieve 99.9 per cent fibre coverage by 2027, and the migration of customers from legacy broadband technologies to fibre."

Why is 5G the leading mobile technology?

Mishra commented: "5G continues to be the leading mobile technology in Japan in terms of subscriber base, thanks to the wider availability of 5G-compatible smartphones, and increasing migration of subscribers from 4G to 5G services."

Operators are not standing still on the network side either. They are investing in 5G network modernization, standalone (SA) deployments and 5G-Advanced capabilities to improve performance and support advanced enterprise and consumer use cases. That is vendor-grade language for incremental upgrades — but the SA and 5G-A spending is real and ongoing.

Does pay-TV still matter?

Barely. Pay-TV services revenue will grow at a marginal CAGR, with IPTV and cable TV gains only partially offsetting DTH decline. Japanese consumers are dropping cable and satellite for cheaper, on-demand streaming platforms. Demographics compound the problem: Japan's aging, shrinking population skews away from traditional television sets, with younger generations favouring mobile devices.

Who leads the market?

NTT, on both fronts. Mishra concluded: "In the mobile services segment, NTT will remain the market leader, by subscription share through the forecast period, given its extensive subscriber base and continued investment in next-gen mobile technologies."

NTT DOCOMO is advancing 5G-Advanced and 6G development through AI-driven wireless technologies, achieving successful outdoor 6G trials and pioneering AI-enabled network architecture, according to the analyst. NTT's fixed broadband leadership rests on its extensive nationwide fibre infrastructure.

The takeaway is straightforward. Japan's telco growth through 2030 rests on data — mobile via 5G, fixed via fibre to that 99.9% coverage target — while voice and satellite TV shrink in the background.