Japan only
Local service on the KDDI network. This plan is for use in Japan only and does not include international roaming.
Destination guide · KDDI
Japan eSIM guide: number, data, calls and SMS
This is a data-only Japan eSIM: unlimited high-speed data on your phone for 3 to 31 days, with no phone number, no cellular calls and no SMS. Hotspot sharing has its own separate total allowance, and messaging and calling apps run over the data connection instead.
Unlimitedphone data
2–30 GBseparate hotspot allowance
3–31 daysfrom activation
Data onlyno number, calls or SMS
Every Japan plan, row by row.
The same facts the product page shows before checkout — data, calls, SMS and when the clock starts — laid out side by side.
| Plan | Data | Local calls | International calls | SMS | Validity | Price |
|---|---|---|---|---|---|---|
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 3-day period | 3 days of validity from activation | ¥1,464 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 4-day period | 4 days of validity from activation | ¥1,790 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 5-day period | 5 days of validity from activation | ¥2,115 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 6-day period | 6 days of validity from activation | ¥2,604 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 7-day period | 7 days of validity from activation | ¥2,930 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 8-day period | 8 days of validity from activation | ¥3,418 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 9-day period | 9 days of validity from activation | ¥3,744 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 10-day period | 10 days of validity from activation | ¥3,907 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 11-day period | 11 days of validity from activation | ¥4,232 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 12-day period | 12 days of validity from activation | ¥4,558 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 13-day period | 13 days of validity from activation | ¥4,884 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 14-day period | 14 days of validity from activation | ¥5,209 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 15-day period | 15 days of validity from activation | ¥5,372 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 16-day period | 16 days of validity from activation | ¥5,535 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 17-day period | 17 days of validity from activation | ¥5,698 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 18-day period | 18 days of validity from activation | ¥5,861 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 19-day period | 19 days of validity from activation | ¥6,186 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 20-day period | 20 days of validity from activation | ¥6,512 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 21-day period | 21 days of validity from activation | ¥6,675 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 26-day period | 26 days of validity from activation | ¥8,303 | |||
| UnlimitedData only - no number, calls or SMS | Unlimited high-speed data on your phone for the whole 31-day period | 31 days of validity from activation | ¥9,932 |
What works where.
Unlimited phone data
There is no total data cap for use on the device itself. Actual speeds depend on coverage, congestion and your device.
Separate hotspot cap
Tethering has its own total allowance for the plan, from 2 GB on the 3-day option up to 30 GB on the 31-day option.
No number, calls or SMS
This is a data-only eSIM. It issues no phone number and carries no cellular voice or SMS service in either direction.
Apps over data
Internet calling and messaging apps work normally over the data connection.
SMS and verification codes
Can you receive texts on this eSIM?
Not included. This is a data-only eSIM with no SMS service in either direction, so it cannot receive one-time passcodes.
Bank and app verification codes are not guaranteed on any travel eSIM — carriers do not promise short-code delivery. Keep your home SIM available for codes.
Conditions to read before you buy.
Starts on first network connection
The plan begins when the eSIM first connects to the network, not when you buy it. Install before you travel and enable it after you land.
No number, calls or SMS
This plan cannot receive one-time passcodes by SMS and cannot place or take ordinary phone calls. Keep your home SIM available if you need those.
Hotspot is capped
The hotspot allowance is separate from the unlimited phone data and is a total for the whole plan.
Install within 180 days
The eSIM must be installed within 180 days of purchase.
Compatible unlocked phone required
Confirm eSIM support and carrier-unlocked status before purchase.
Install on the final device
The QR code is for a single installation. It cannot be reinstalled or moved to another device, so do not delete the installed profile.
Install and connect.
- Check the phone
Confirm that the phone is carrier-unlocked and supports eSIM before purchase.
- Install on the intended phone
Use stable Wi-Fi and keep the eSIM installed. Reinstallation and moving it to another device are not supported. You have 180 days from purchase to install.
- Connect after arrival in Japan
Enable the eSIM, select it for mobile data and allow registration on KDDI. The plan starts at this first connection.
- Complete network setup
Enable Data Roaming if required. If automatic setup fails, set the APN to uad5gn.au-net.ne.jp with username au@uad5gn.au-net.ne.jp, password au and CHAP authentication.
A good fit when
- You want data that does not run out partway through the trip.
- You navigate, stream and browse on your phone and want no allowance to watch.
- You use WhatsApp, LINE, FaceTime or similar apps instead of a cellular number.
Choose another plan if
- You need a Japanese phone number for bookings, deliveries or verification codes.
- You need to make or receive ordinary cellular calls or SMS.
- You need to tether heavily — hotspot use is capped separately on every duration.
- You need to receive bank or service one-time passcodes by SMS.
Questions
about this eSIM.
Straight answers about the Japan plan — the same facts, in question form.
Does the Japan eSIM include a local phone number?
This is a data-only eSIM. It issues no phone number and carries no cellular voice or SMS service in either direction.
Can I receive SMS and verification codes?
Not included. This is a data-only eSIM with no SMS service in either direction, so it cannot receive one-time passcodes. Bank and app verification codes are not guaranteed on any travel eSIM — carriers do not promise short-code delivery. Keep your home SIM available for codes.
When does validity start?
Starts when the eSIM first connects to the network; install within 180 days of purchase. Unlimited: 3 days of validity from activation; Unlimited: 4 days of validity from activation; Unlimited: 5 days of validity from activation; Unlimited: 6 days of validity from activation; Unlimited: 7 days of validity from activation; Unlimited: 8 days of validity from activation; Unlimited: 9 days of validity from activation; Unlimited: 10 days of validity from activation; Unlimited: 11 days of validity from activation; Unlimited: 12 days of validity from activation; Unlimited: 13 days of validity from activation; Unlimited: 14 days of validity from activation; Unlimited: 15 days of validity from activation; Unlimited: 16 days of validity from activation; Unlimited: 17 days of validity from activation; Unlimited: 18 days of validity from activation; Unlimited: 19 days of validity from activation; Unlimited: 20 days of validity from activation; Unlimited: 21 days of validity from activation; Unlimited: 26 days of validity from activation; Unlimited: 31 days of validity from activation
Which network does it use, and what APN?
It runs on KDDI. The APN is uad5gn.au-net.ne.jp (username au@uad5gn.au-net.ne.jp, password au, CHAP).
Can I share data via hotspot?
Tethering has its own total allowance for the plan, from 2 GB on the 3-day option up to 30 GB on the 31-day option.
How do I install it?
1. Check the phone — Confirm that the phone is carrier-unlocked and supports eSIM before purchase.2. Install on the intended phone — Use stable Wi-Fi and keep the eSIM installed. Reinstallation and moving it to another device are not supported. You have 180 days from purchase to install.3. Connect after arrival in Japan — Enable the eSIM, select it for mobile data and allow registration on KDDI. The plan starts at this first connection.4. Complete network setup — Enable Data Roaming if required. If automatic setup fails, set the APN to uad5gn.au-net.ne.jp with username au@uad5gn.au-net.ne.jp, password au and CHAP authentication.
Everything the Japan eSIM | KDDI Unlimited Data | 3-31 Days includes — data, coverage, activation and when validity starts — taken from the product record and kept in sync with it. Prices and checkout are on the product page.
Ready for Japan?
Pick the plan row that fits your trip. Delivery by email, usually within five minutes.
Taro Mobile is the seller and your point of support. Mobile data service is provided through KDDI. Facts on this page come from the product record, last updated .