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Japan Unlimited 5G, 7 days

Truly unlimited 5G data on KDDI in Japan.

$21.99for 7 days

  • Truly unlimited 5G data in Japan
  • Data only; keep your own number for calls
  • 7 days, starting when you first connect

About this plan

Japan plans run on KDDI (au), one of Japan's big three networks, sold by the length of your stay.

Direct on KDDI

This eSIM is a genuine KDDI SIM, not a reseller's roaming profile. In Japan your phone joins the network directly, like a local customer's, and your connection goes straight to the internet from there.

Most travel eSIMs send everything through a hub in another country, often on another continent, so every page, call and game makes a long round trip. A direct local connection keeps latency low, which is what makes video calls, meetings and online games feel smooth.

Speeds can vary with your phone model and the bands it supports in each country.

Under the hood

SIM issued by
KDDI (Japan)
Internet breakout
Japan
Phone number
None; data only
Will my phone work?
Your phone
Not sure which model you have?

Dial *#06#. If an EID appears, your phone supports eSIM. Your model name is under Settings, About.

Checked on your device. Your IMEI is never sent or stored.

Plan details

  • 7 days of service, starting at your first data connection in Japan.
  • One eSIM per device. Data only, with no phone number.

How Japan Unlimited 5G, 7 days compares

Against the closest plans from Airalo, Saily and Holafly, checked September 28, 2026.

Only with Haxzu

  • Your SIM comes from the network itself, so you get its full coverage
  • A trip planner that picks the right plan for every stop
  • The Haxzu app, coming soon: install, top up and switch plans in a tap

Competitor prices from their websites, in US dollars, and may have changed since. Airalo, Saily, Holafly