ahamo

ahamo is a mobile phone tariff plan and registered trademark of NTT Docomo, launched on March 26, 2021. Announced on December 3, 2020, the plan targets digital-native users, primarily those in their 20s. It is completely separate from Docomo's traditional plans and was initially available only through a dedicated website and app, with no applications accepted at physical stores. Later, Docomo stores began offering paid support and device purchases, making it closer to a main-brand service than a sub-brand, in contrast to online-only plans such as KDDI's povo and SoftBank's LINEMO. The service is not available for corporate contracts. The name derives from "aha moment" (a moment of sudden insight), "Aha" (an English interjection meaning "I see"), and "アハ" (aha), the Japanese expression for laughter. At launch, the monthly fee was 2,700 yen (excluding tax), reduced from the initially announced 2,980 yen. It includes 30 GB of data usable in Japan and 82 countries and regions, plus free domestic calls of up to five minutes each. Optional add-ons include "Omori" (increased data) and "Kake-hodai" (unlimited domestic calls). In 2024, the standard plan's data allowance was increased to 30 GB, and the Omori and Poikatsu plans to 110 GB, with no change in monthly fee. From December 2026, the Omori option is to be replaced by tiered pricing based on data usage. Within NTT Docomo, ahamo is positioned as a low-cost, digital-first brand aimed at competing with other carriers' sub-brands and online-only plans. Its service lineup has expanded, with "ahamo Hikari" (fiber-optic service) launched in July 2023, and the "JAL Mobile powered by ahamo" MVNO service planned for June 2026. The brand is promoted through television commercials featuring Nana Mori and Fūju Kamio, as well as the YOASOBI song "Sangenshoku" (Three Primary Colors).

ahamo was announced by NTT Docomo on December 3, 2020, and launched on March 26, 2021. It was created in response to competitive pressure from other mobile network operators (MNOs) and the government's push for lower mobile phone rates. Unlike KDDI and SoftBank, which had introduced sub-brands UQ mobile and Y!mobile respectively, Docomo had not launched a sub-brand. The entry of Rakuten Mobile in 2019 and the government's request for price reductions in 2020 prompted Docomo to introduce ahamo as a main-brand plan, though it was completely separate from existing plans and functioned similarly to a sub-brand. Initially, ahamo was available only through a dedicated website and app, with no in-store sign-ups. The monthly fee was set at 2,980 yen (excluding tax) but was reduced to 2,700 yen before launch. In April 2021, paid in-store support began, and by 2025, sign-ups were possible at retail stores and special events. The service expanded to include options like the "Omori" data add-on and "Kakehodai" for unlimited calls. In 2022, the "ahamo Omori" plan was introduced, offering 100GB for 4,950 yen (tax included). In 2024, data allowances were increased to 30GB for the standard plan and 110GB for Omori and Poikatsu, with no price change. From December 2026, a tiered pricing structure based on data usage is planned, replacing the Omori option. ahamo has also expanded into other services: "ahamo Hikari" fiber-optic service launched in July 2023, and a partnership with Japan Airlines will launch "JAL Mobile powered by ahamo" in June 2026. The brand is promoted with TV commercials featuring Nana Mori and Fūju Kamio, and the song "Sangenshoku" by YOASOBI.

• NTT Docomo announces ahamo plan

• ahamo service launches

• Paid in-store support begins at Docomo shops

• ahamo Omori option (80GB) launches

• ahamo Hikari fiber-optic service launches

• Data allowances increased to 30GB (standard) and 110GB (Omori/Poikatsu)

• JAL Mobile powered by ahamo to launch

• Planned shift to tiered pricing based on data usage

Low-cost, digital-first mobile plan brand targeting digital natives, positioned as a main brand rather than a sub-brand.

• ahamo standard plan

  Monthly plan with 30GB data, free 5-minute domestic calls, usable in Japan and 82 countries/regions.

• ahamo Omori

  Option adding 80GB data for an additional monthly fee, later increased to 110GB total.

• ahamo Poikatsu

  Plan variant with additional data for point-earning activities.

• ahamo Hikari

  Fiber-optic internet service for ahamo users, launched July 2023.

1. 1ahamo - Wikipediaja.wikipedia.org
2. 2ahamo - Wikidatawikidata.org