Mizuki Mobile
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i-Mode service development
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Getting Started

What is Mizuki Mobile What is i-Mode What is Keitai Archive

Information

Supported network i-Mode development reports Terms of use

Support

i-Mode documentation Troubleshooting Contact information

Mizuki Mobile Services

Services

Information, support, and engineering progress for services available through the Mizuki Mobile network.

Mizuki Mobile Engineering

i-Mode Support & Development

Technical reports, compatibility research, implementation notes, and public progress updates for the Mizuki i-Mode service and supported keitai devices.

Latest technical reports

July 16th 2026 PDC MOVA In development

Mizuki2G PDC MOVA

Mizuki2G services welcome the new PDC MOVA network to reconnect the 2G era keitai's! The first MOVA to connect is the SO505i!

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Current work

  • Created the network stack and registered a MOVA (SO505i).
  • Use current Mizuki subscriber identity for services usage.

Goal

Provide people access to original hardware for PSX, GameBoy and WonderGate games, using the Mizuki i-Mode services as well.

June 15th 2026 i-Mode Center In development

i-Mode Center

Improving how the center identifies genuine DoCoMo handsets, supported emulators and WAP devices before serving the correct portal.

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Current work

  • Redirect the links for PSX emulator (very basic DoCoMo 1.0 browser).
  • Preserve Mizuki subscriber identity for services usage.

Goal

Provide each client with the correct compact HTML entry point without unnecessary redirects or modern browser dependencies.

June 13th 2026 Packet Data Success

i-Mode access now on the SH-06a NERV

We finally reached a state that the device (SH-06A) attach and officially access GPRS data and the Mizuki iMode center.

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Achieved work

  • Connected a MOAP(s) keitai on GPRS fully and access the new i-Mode center.
  • Navigate and tried to sideload i-Applis which turned out successful too.
  • Improvements to be made.

Goal

Improving the services.

June 10th 2026 i-Appli Testing

Mizuki Mall and i-Applis support

Implementing a new and cleaner Mizuki Mall for DoJa applications, including device profiles, JAM descriptors, application metadata, and compatible download pages.

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Current work

  • Organize applications by DoJa or Star platform profile.
  • Match handset user agents to a compatible application catalogue.
  • Serve compact HTML installation objects and descriptor files correctly.

Goal

Make application publishing predictable while keeping the mall easy to maintain and compatible with original FOMA browser limitations.

June 6th 2026 Packet Data Success

The i-Mode revival and first access on L-03A

We finally reached a state that the device (L-03A) attach and officially access the Mizuki iMode center.

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Achieved work

  • Connected a FOMA on GPRS fully and access the new i-Mode center.
  • Navigate and tried to sideload i-Applis which turned out successful.
  • Improvements to be made.

Goal

Build a full compatible i-Mode service for FOMA.

Mai 2026 Packet Data Research

GPRS and i-Mode packet-data compatibility

Recording handset-specific behavior during packet attachment, capability negotiation and access to the Mizuki i-Mode gateway.

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Current work

  • Compare behavior across devices on the network during GPRS attach.
  • Implementation of a SIM authentification and improving the GPRS stack.
  • Separate network compatibility findings from handset-specific exceptions.

Goal

Build a reliable compatibility system for devices connecting to Mizuki packet services and reduce device-specific issues.

Device Catalog

Mizuki Mobile Device Profiles

Per-device radio capability, Mizuki network testing and i-Mode technical information from one editable catalog.

Hardware support and Mizuki compatibility are separate. A handset can support GSM, GPRS or FOMA/UMTS in hardware without being confirmed on the current Mizuki Mobile network. This catalog records both states independently so GSM and future 3G support can be managed accurately.
Loading device profiles... Source: data/devices.json

Ready for MSS management

The public website now reads the catalog through /api/v1/devices. The local JSON file remains the editable source for now, but MSS can later become the editor or upstream source without changing the profile UI.

Help & Compatibility

Support

Help for Mizuki Mobile services and a technical reference for classic NTT DoCoMo i-mode handsets.

i-Mode device reference

Select a handset to view its complete profile, including hardware radio capability, Mizuki GSM/3G testing, browser generation and archived i-Mode capabilities.

Mizuki i-Mode 1.0 or 2.0 define only which UI of the i-Menu and other services the device will have.