NTT Docomo raises ahamo data to 40 GB, adds 2 GB to docomo mini

NTT Docomo will begin a "Data Increase Trial Campaign" on 1 August 2026 for its online‑only plans. The ahamo plan will receive an additional 10 GB, raising the monthly allowance from 30 GB to 40 GB at no extra charge. The docomo mini plan will gain 2 GB, moving the 4 GB tier to 6 GB and the 10 GB tier to 12 GB. The boost applies automatically to new and existing subscribers without a separate application, though eligibility for ahamo requires registration of a d‑account, d‑Point Club membership, an online‑issued d‑Point Card number, and e‑Living. The campaign has no fixed end date. The move coincides with recent competitive pricing moves by rival carriers UQ mobile and Y!mobile, suggesting Docomo is using the trial to strengthen its sub‑brand offerings.