Japan eSIM Unlimited Data | KDDI

From AU$22.00

From AU$22.00

True Unlimited Data
4G/5G Speed
Up to 31 Days
Data Only
See use by dates
Use in Japan

dataCap

Unlimited Data

day

4 Days use by 24 Oct

7 Days use by 22 Nov

10 Days use by 22 Nov

15 Days use by 22 Nov

31 Days use by 28 Sep

Clear

Unlimited Data — 4 Days use by 24 Oct

EJPKDDI4DBC_110083

AU$22.00

Unlimited Data — 7 Days use by 22 Nov

EJPKDDI7D_110084

AU$35.00

Unlimited Data — 10 Days use by 22 Nov

EJPKDDI10D_110085

AU$45.00

Unlimited Data — 15 Days use by 22 Nov

EJPKDDI15D_110086

AU$65.00

Unlimited Data — 31 Days use by 28 Sep

EJPKDDI31D_123324

AU$105.00

Quantity

Description

What’s Included?

True Unlimited Data
4G/5G speed (up to 1Gbps)*
1 – 31 days of service from activation (natural day)
For use in Japan
Hotspot/Tethering enabled
- Limits apply: 4 days – 3GB, 7 days – 6GB, 10 days – 9GB, 15 days – 15GB, 31 days – 30GB
How do eSIMs work? Check our eSIM setup guide
- Purchase your eSIM plan, QR code will be sent within 24 hours
- Scan the QR code to add the eSIM to your eSIM compatible phone
eSIM must connect to supported network and be used by:
- 31 Days eSIM service ends on 28 September 2025
- 7, 10 & 15 Days eSIM service ends on 22 November 2025
- 4 Days eSIM service ends on 24 October 2025

Thing’s to know

The eSIM’s provider is KDDI (local Japanese operator)
Plan starts when eSIM connects to supported network
No ID registration needed
Service days are calculated according to Japan Standard Time (GMT+9) and reset at 00:00 (midnight) each day, not based on a 24-hour period.
No calls or texts included (data-only eSIM)
Coverage on KDDI
Compatible with unlocked eSIM-enabled phones (with EID numbers)
Click here for the SIM Card version

Important Notes

Adding the eSIM outside the coverage country may result in a “failed activation,” which is normal. The eSIM will activate once you reach your destination.
Once the eSIM is installed it cannot be transferred or deleted – no refunds will be provided for installation error or accidental delete
The eSIM service will end by the “use by” date, please make your purchase carefully as no refunds will be provided once the eSIM is sent
Haven’t received your eSIM? Check your junk mail or reach out to us
Check network coverage in your intended travel areas; Coverage issues are outside our control and we do not offer refunds

Japan eSIM Unlimited Data by KDDI

At TravelKon, we believe in clear and honest communication. Some sellers advertise ‘unlimited data‘ loosely. If you encounter ambiguous language about potential data slowdowns due to factors beyond their control and assurances that speeds will normalise the next day, it indicates undisclosed daily usage caps. Reducing the speed to 128Kbps without disclosure is misleading and barely enough for basic messaging!
Our Unlimited Japan KDDI Ultra plan truly means unlimited data with no daily data caps!
Ranked #1 by Opensignal in October 2024, KDDI leads Japan’s telecom market, surpassing NTT Docomo and Softbank. Known for its extensive coverage in both urban and rural areas, KDDI offers unmatched network performance, ensuring seamless connectivity across Japan’s diverse landscapes.

Troubleshooting Guide

eSIM not working? Don’t stress! Follow this guide to get you up and running.

Disable VPN and any secondary SIM/eSIM lines (for dual SIM phones)
Connect to Wi-Fi and disable airplane mode before scanning the eSIM
Confirm mobile data is sourced from our eSIM (i.e. the correct eSIM profile is selected)
Turn data roaming on (Android: select all network)
Wait up to 10 minutes for activation to occur
APN: uad5gn.au-net.ne.jp | Username: [email protected] | Password: au OR:
APN: uno.au-net.ne.jp | Username: [email protected] | Password: KpyrR6BP (Android: select manually)
Android Only: Authentication Type: CHAP
Turn off automatic network selection and manually choose from the list below.
Restart your phone and/or turn on and off airplane mode
Still not working? Chat with us live, we’re here to help!

We are not affiliated with the network provider. Data allowance may change without notice; check our website for updates.

Network Operator(s) List

Japan [KDDI]

*Access to KDDI’s 5G network is available in designated 5G coverage areas when using a 5G-compatible device. Outside these areas, your device will switch to 4G. Download speeds on 5G can reach up to 1Gbps under optimal conditions, this is the maximum potential speed and not guaranteed. Speeds and quality depend on factors like location, device, network congestion, and coverage.

List of eSIM Supported Handsets (not exhaustive)

Reviews

Excellent.

Easy to use, great price, SIM card worked really well all around Japan, however it would not work in my old Samsung A30 phone, which I didnt realize until I tried it. But it worked great in my A73.

Loved the Internet access

It was simple to use once I worked out how to remove my Oz sim. Customer support was there to assist too. Thank you

Great sim easy to connect and use.

Excellent service.

Seamless e-sim download and setup. Speed was reliable and consistent.

Great

Used in Japan, Worked very well!

Surprised at the coverage and value for money

Unlimited in japan no limits, amazing coverage everywhere I went. 5g everywhere
Absolutely recommend, and will use again next travel trip.

it worked beautifully

I configured the eSIM here in AU before going to Japan, then as soon as we landed, I disabled my AU SIM and enabled the eSIM, it didn't work :) because I forgot to enable "Roaming", once I did that, it worked PERFECTLY
I even bought an additional one during my trip and also worked.
Perfect service, whatsapp chat replied immediately to help

Great service

Great service, user friendly and easy to install

Life saver

We traveled to japan with some friends and decided to use our own telecomunications providers roaming service at first, but realised very quickly it was expensive. Our friends put me onto travelkon and couldnt believe the pricing. Both my wife and i jumped on the product and couldnt have been happier with it. Great coverage and quick download and upload rates so we were able to videocall back home with ease and send plenty of videos and snaps back. Thanks again TravelKon

Japan 30 day sim card

20% disc is very good chance to buy and very reliable and quick service. My past hassle-free experience with TravelKon sim card gives me more confident to buy more from the provider, both internet service received and purchasing experience.

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