Is NTT Docomo profitable?

Yes. For the nine months to December 31, 2025, Docomo's segment operating profit was 745.4 billion yen, down from 833.9 billion yen a year earlier due to intensified MNP switching and device subsidy competition with KDDI and SoftBank, per its FY2025 3Q results presentation.

NTT Docomo is wholly owned by parent NTT Group. NTT delisted Docomo from the Tokyo Stock Exchange on December 25, 2020 after a 4.25 trillion yen (about 40 billion dollars) tender offer to take it fully private.

Could AI replace NTT Docomo?

No. Docomo's moat is spectrum licenses, physical network infrastructure and a 91.4 million subscriber billing base (as of October 2025) that AI cannot replicate. Docomo instead deploys AI internally, launching a commercial agentic AI network maintenance system on February 25, 2026.

Is KDDI or SoftBank a bigger threat to NTT Docomo?

Both contest Docomo on different fronts: SoftBank led Japan's median 5G download speed at 62.05 Mbps versus Docomo's slower speeds per Ookla's Q3 2025 report, while KDDI and SoftBank together drove the profit decline to 745.4 billion yen through subsidy wars, per Docomo's December 2025 filings.

Is NTT Docomo losing subscribers to Rakuten Mobile?

No. Rakuten Mobile remains Japan's fourth and smallest mobile network operator, while Docomo held 91.407 million cellular subscriptions as of October 2025, the largest base in the market, according to Wikipedia's carrier data.

What is NTT Docomo doing with AI right now?

Docomo launched a commercial agentic AI network maintenance system built on AWS Bedrock AgentCore (live February 4, 2026), Japan's first commercial 5G core on AWS with NEC (March 2, 2026), and Nokia's MantaRay AutoPilot for network optimization (June 19, 2026).

Telecom infrastructure · subsidiary of Nippon Telegraph and Telephone Corporation (NTT) · Japan

NTT Docomo

nttdocomo.co.jp ↗

Japan's largest mobile carrier, wholly owned by NTT, serving 91M+ subscribers.

Hard to displace

Assessed 26 July 2026 · Evidence as of 26 July 2026

Strong structural protection; the business model survives ai pressure.

On the recordSince 26 July 2026 · Checkable from August 2026 · Every call on the record Checkpoint: FY2026 Q1 earnings report on whether MNP/subsidy profit squeeze stabilizes or widens

The call

Docomo's spectrum and billing lock-in keep it standing while price wars with KDDI and SoftBank quietly eat into margins, not market share.

NTT Docomo runs Japan's largest mobile phone network, serving over 91 million people. It is hard to replace because the government controls who gets radio frequencies to operate, and Docomo owns the main network infrastructure across the country. Its biggest threats are not new technology or AI, but price wars with rival carriers KDDI and SoftBank that are slowly shrinking profits. The one thing that could change the picture is if the Japanese government decides to break up the NTT Group or forces major changes to how carriers share networks, which regulators are watching closely.

Why

AI pressure: None apparent. AI cannot replicate spectrum licenses or physical network; Docomo uses AI internally for network ops and marketing, not defense. Could AI do the core job? Unlikely.

Bigger players: KDDI (au) and SoftBank. Rival carriers compete hard on price and device subsidies, squeezing margins, but can't take spectrum-locked subscribers away. Could a giant copy it? No, they are blocked.

What protects it. Government-allocated spectrum plus a 91-million-subscriber d-Point/d-Card billing ecosystem rivals cannot copy.

What would change this call

FY2026 Q1 earnings (~August 2026) show operating profit widening or stabilizing versus prior-year decline. Indicates whether MNP/subsidy price war is intensifying or easing.
Rakuten Mobile subscriber count and cost-per-subscriber figures reported in 2026. Would show whether Rakuten is becoming a credible low-cost #3 rival.
MIC announcements on spectrum reallocation or wholesale MVNO pricing rules in 2026. Would show regulatory erosion of Docomo's spectrum-based moat.

Key numbers

NTT Group FY2025 operating profit: ¥1.7062 trillion, up ¥56.7bn YoY (2026-03-31)
Docomo 3Q FY2025 operating profit fell to ¥745.4bn from ¥833.9bn YoY (2025-12-31)
d-Payment/d-Card transaction volume hit ¥8.27 trillion, +25% YoY (2025-11-30)

Named risks

Domestic profit compression from MNP switching and device subsidy competition with KDDI and SoftBank. Severity: medium
Regulatory or antitrust scrutiny of NTT Group's market dominance following 2023-era objections from rivals. Severity: medium
Execution risk from July 2026 launch of NTT DOCOMO Financial Group merging three financial entities. Severity: low
Potential MIC spectrum reallocation or forced below-cost MVNO wholesale weakening structural moat. Severity: low

Rivals, as read in July 2026

Rival	Direction	Evidence
KDDI	contesting	Price/MNP war drove Docomo segment profit down to 745.4bn yen for 9mo to Dec 2025
SoftBank	gaining on	Led Japan median 5G download speed at 62.05 Mbps vs Docomo per Ookla Q3 2025 report
Rakuten Mobile	losing to	Remains Japan's smallest MNO while Docomo held 91.4 million subscribers as of Oct 2025
NTT Data Group (sibling)	contesting	Overlaps in enterprise DX; NTT took NTT Data fully private in 2025

Questions people ask

Is NTT Docomo profitable?: Yes. For the nine months to December 31, 2025, Docomo's segment operating profit was 745.4 billion yen, down from 833.9 billion yen a year earlier due to intensified MNP switching and device subsidy competition with KDDI and SoftBank, per its FY2025 3Q results presentation.
Who owns NTT Docomo?: NTT Docomo is wholly owned by parent NTT Group. NTT delisted Docomo from the Tokyo Stock Exchange on December 25, 2020 after a 4.25 trillion yen (about 40 billion dollars) tender offer to take it fully private.
Could AI replace NTT Docomo?: No. Docomo's moat is spectrum licenses, physical network infrastructure and a 91.4 million subscriber billing base (as of October 2025) that AI cannot replicate. Docomo instead deploys AI internally, launching a commercial agentic AI network maintenance system on February 25, 2026.
Is KDDI or SoftBank a bigger threat to NTT Docomo?: Both contest Docomo on different fronts: SoftBank led Japan's median 5G download speed at 62.05 Mbps versus Docomo's slower speeds per Ookla's Q3 2025 report, while KDDI and SoftBank together drove the profit decline to 745.4 billion yen through subsidy wars, per Docomo's December 2025 filings.
Is NTT Docomo losing subscribers to Rakuten Mobile?: No. Rakuten Mobile remains Japan's fourth and smallest mobile network operator, while Docomo held 91.407 million cellular subscriptions as of October 2025, the largest base in the market, according to Wikipedia's carrier data.
What is NTT Docomo doing with AI right now?: Docomo launched a commercial agentic AI network maintenance system built on AWS Bedrock AgentCore (live February 4, 2026), Japan's first commercial 5G core on AWS with NEC (March 2, 2026), and Nokia's MantaRay AutoPilot for network optimization (June 19, 2026).

Timeline

2026-07-01NTT DOCOMO Financial Group launches, merging DOCOMO Finance, Monex, and renamed SBI Sumishin Net Bank
2026-06-22Docomo becomes first in Japan to deploy Nokia's MantaRay AutoPilot AI network optimization
2026-06-12NTT DOCOMO announces new management team, effective July 1, 2026
2026-05-25NTT Group FY2025 Q4 results show record consolidated operating revenue of 14.4091 trillion yen
2026-03-31Docomo's 3G service termination planned date
2026-03-02Docomo and NEC launch Japan's first commercial 5G core on AWS
2026-02-25Docomo announces commercial deployment of agentic AI network maintenance system
2025-11-12NTT establishes Large Action Model (LAM) AI technology, doubling telemarketing conversion in trials
2020-12-25Docomo delisted from Tokyo Stock Exchange, becomes wholly owned NTT subsidiary

Revision history

26 July 2026

First assessed. Hard to displace. The text above is fixed as of this date and is not edited afterwards.

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