30 GB eSIM for Japan - 10 Days
30 GB of 5G/4G data across Japan for 10 days, on KDDI's native network. Delivered as a QR code the moment you pay - install before you fly, switch it on when you land.
- Data
- 30 GB
- Validity
- 10 days
- Network
- KDDI 5G
- Hotspot
- Included
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KDDI
Plan
30 GB · 10 days
$20.90USD - one-time
$2.09 per day - no contract, no auto-renewal
- QR code emailed instantly
- No ID verification required
- Keep your home number active
Need a different length?
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Unlimited - 10 days
$21.85
What's included
30 GB of full-speed data. About 3 GB a day across 10 days - enough for maps, messaging and social feeds.
Personal hotspot. Share the connection with a laptop, tablet or the people you travel with.
A Japanese IP address. Local apps, maps and streaming behave the way they do for residents.
Automatic setup. The APN configures itself - nothing to type in on arrival.
No ID checks. No passport upload, no registration form, no waiting for approval.
Not included
A Japanese phone number. This is a data-only plan.
Voice calls and SMS. WhatsApp, LINE, FaceTime and Zoom all work over data.
Top-ups. To extend, buy another plan - it installs alongside this one.
Coverage outside Japan. The plan works on Japanese networks only.
Fair use
The 30 GB allowance is shared across the whole 10 days. When it runs out the data stops - buy another plan to keep going.
Plan specification
Everything this eSIM does, in full. Nothing hidden behind a support ticket.
| Plan name | 30 GB eSIM for Japan - 10 Days |
|---|---|
| Plan type | Data only |
| Data allowance | 30 GB |
| Throttling | None |
| Validity | 10 days |
| Activation | On first use |
| Install before | 180 days from purchase |
| Billing | One-time, $20.90 |
| Operator | KDDI (au) - Japan |
|---|---|
| Technology | eSIM - 5G / 4G LTE |
| APN | au.5g.au-net.ne.jp |
| APN configuration | Automatic |
| Hotspot / tethering | Supported |
| Data roaming | Supported |
| ID verification (KYC) | Not required |
| Calls / SMS | Not included |
Plan ID AwABAxMAAABKUEstMTBkYXlzLTMwZ2ItYWxs - Product Japan KDDI
Installing this eSIM takes about two minutes.
- 1
Buy and receive the QR
The QR code lands in your inbox seconds after checkout, together with the manual activation codes if you prefer to type them in.
- 2
Scan it at home on Wi-Fi
Settings, then Mobile Data, then Add eSIM, then scan. Install any time within 180 days of buying; the 10 days have not started yet.
- 3
Land in Japan, switch it on
Turn on the line and data roaming. The phone attaches to KDDI automatically and the 10 days begin at that first connection.
Coverage & speed
Native KDDI, not a roaming reseller.
This plan sits directly on KDDI's Japanese network. You get the same signal a local subscriber gets, from central Tokyo to Shinkansen tunnels and rural Hokkaido - with a Japanese IP address rather than a foreign one tunnelled home.
- of the population covered
- 99%of the population covered
- peak measured 5G speed
- 871 Mbpspeak measured 5G speed
- typical latency
- ~32 mstypical latency
Device compatibility
Your phone needs eSIM support and must be carrier-unlocked.
Apple
- iPhone XS / XR and later
- iPhone SE (2020) and later
- iPad Pro 11 inch and Air 3 and later
Android
- Samsung Galaxy S20 and later
- Google Pixel 3 and later
- Most 2022 and newer flagships
Questions about this plan
Is 30 GB enough for 10 days in Japan?
It works out to roughly 3 GB per day across the 10 days, which comfortably covers maps, messaging, transit apps and social feeds. Streaming video for hours or tethering a laptop all day will use 30 GB faster, so consider a larger bundle or an unlimited 10-day plan if that sounds like your trip.
When do the 10 days on the 30 GB eSIM start?
At first use. The 10-day clock starts the moment the eSIM first connects to a Japanese network, not when you pay and not when you install it. You can install the 30 GB eSIM at home over Wi-Fi days or weeks earlier without losing a single day.
How much does the 30 GB eSIM for 10 days cost?
$20.90 as a one-time payment, which is about $2.09 per day across the 10 days. There is no contract, no auto-renewal and no deposit, and hotspot tethering is included at no extra charge.
Does the 10-day 30 GB plan allow hotspot tethering?
Yes, tethering is enabled at no extra cost, so a laptop, tablet or a travel companion's phone can share the connection. Everything they use comes out of the same 30 GB, so keep an eye on it if you are sharing across the full 10 days.
I am travelling in a few months - can I buy the 10-day 30 GB eSIM now?
Yes. The QR code stays valid for 180 days from purchase, and the 10-day validity only starts when the 30 GB eSIM first connects to a network in Japan. Buying months ahead of your trip is fine.
Do I need to configure an APN for the 10-day 30 GB eSIM?
No. The 30 GB eSIM configures itself when it attaches to KDDI, so there is nothing to type in on arrival. If your device ever asks during the 10 days, the APN is au.5g.au-net.ne.jp.
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Read guide30 GB for your 10 days in Japan.
$20.90, one payment, QR code by email. Install tonight, connect the moment you land.