Sale!

Japan SIM Card Unlimited Ultra KDDI 31 Days

Japan SIM Card Unlimited Data | KDDI

$28.00 – $91.00

Sale!

$28.00 – $91.00

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 — 7 Days$28.00

Unlimited Data — 10 Days$35.00

Unlimited Data — 15 Days$49.00

Unlimited Data — 31 Days$91.00

Quantity

Description

What’s Included?

True Unlimited Data
4G/5G speed (up to 871Mbps)*
7 – 31 days of service from activation (natural day)
For use in Japan
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
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
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 857Mbps 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.

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