Sale!

Japan SIM Card Unlimited Data | KDDI

Sale!

True Unlimited Data
4G/5G Speed
Up to 31 Days
Data only
Expiry 17/06/25
Use in Japan

dataCap

Unlimited Data

day

7 Days

10 Days

15 Days

31 Days

Clear

Unlimited Data — 31 Days

JPKDDI31D_123334

AU$22.50

Quantity

Description

What’s Included?

True Unlimited Data
4G/5G speed (up to 1Gbps)*
7 – 31 days of service from activation (natural day)
For use in Japan
Nano SIM card only (standard or micro size SIM card slot will NOT fit)
Hotspot/Tethering enabled
- Limits apply: 7 days – 6GB, 10 days – 9GB, 15 days – 15GB, 31 days – 30GB
Service ends on 17 June 2025

Thing’s to know

Local KDDI Japanese SIM Card
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 mobile devices (Galaxy Note 8, Realme, Nokia, LG K30 phones are NOT compatible)
Works in all unlocked devices (mobile phones & tablets devices)
Click here for the eSIM version

Important Notes

Insert the SIM card upon arrival at your destination to avoid accidental activation outside coverage countries.
SIM will not work on Modem/Mifi/Pocket Wifi device
Galaxy Note 8, Realme, Nokia and LG K30 are not compatible phones – no refunds will be provided if you use these phones.
Data service will end on the expiry date stated
Check network coverage in your intended travel areas; Coverage issues are outside our control and we do not offer refunds

Unlimited Japan KDDI Ultra Product Line

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

SIM 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)
Turn phone off, remove the SIM, insert the SIM back and turn phone on
Confirm mobile data is sourced from our SIM (i.e. the correct SIM 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.

Reviews

Must have

Great option for people visiting Japan for holiday. Super fast connection and I did not have to worry about getting lost. Highly recommend it .

Seamless

Fabulous, worked everywhere I went, which was Tokyo, Lake Yamanaka, Hakone area 5 golf courses around Mt Fuji. I installed it at home when in great wifi before travelling. As soon as I landed it just started when I made it my primary number. I will use Travelkon again.

Local sim with true unlimited data

I’ve used roaming travel sim from foreign networks before. The major issue is that it seems like Japan Network has QoS prioritised which I sometimes had a lag feeling or unresponsive traffic with it. However, this KDDI local sim is the best, it is true unlimited without speed cap and QoS limitations which ensure that you will have internet wherever you need without any interruptions. This local KDDI sim is even cheaper than many roaming travel sim too. The best and the most recommended!

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

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