“Unlimited” means on your phone
No daily cap and no speed cap. The network’s Fair Usage Policy looks at your last 3 days; if use is judged excessive, speed may drop to about 1 Mbps for a while. The exact threshold isn’t published.
Japan eSIM · Unlimited 5G
Unlimited 5G, on Japan’s own network.
No daily cap and no speed cap on your phone, on KDDI (au). The Fair Usage Policy and a hotspot total apply — both shown right here.
Unlimited on your phoneFair Usage Policy applies5G where available4G LTE elsewhereHotspot: days − 1 GBThen 128 kbps
What’s included
The whole plan, in one table.
Network, speed, hotspot and dates — the same terms you’ll see before you pay.
GBDays
Hotspot total = days − 1 GB. Beyond it, only hotspot slows to 128 kbps.
Example: a 5-day plan · days change at 00:00 Japan time
Home
1Land
234
523:59
Home
Installed, not countingFirst connection = day 1Active days
- Phone data
- Unlimited. Fair Usage Policy applies: if your use over the last 3 days is judged excessive, speed may be limited to about 1 Mbps for a while. The threshold isn’t published.
- Speed
- No speed cap. 5G where available, otherwise 4G LTE.
- Hotspot
- Days − 1 GB in total (2 GB on 3 days, up to 30 GB on 31 days). Beyond it, hotspot runs at 128 kbps.
- Plan lengths
- 3 to 21 days, 26 days or 31 days.
- Network
- KDDI (au), as a Japanese local line. In Okinawa, the au network run by Okinawa Cellular.
- Day 1
- The day your eSIM first connects in Japan. Days change at 00:00 Japan time, not every 24 hours.
- Last day
- Ends at 23:59 Japan time (UTC+9).
- Start-by date
- Sent with your eSIM. If you haven’t connected by then, your days start on that date.
- Top-up or extension
- Not available. Please choose enough days.
- Calls and SMS
- Not included. This is a data-only eSIM: no phone number, calls, SMS or emergency calls.
- Installation
- Once, on one phone. A deleted eSIM can’t be reinstalled or moved to another phone.
- Provided by
- ROKKODE Inc., a telecommunications carrier in Japan, under its Japanese-language MVNO terms. Sold by Vision Factory LLC.
The fine print, upfront
What the big words mean here.
“Unlimited”, “5G” and “hotspot” each come with a limit. Here they are, right next to the promise.
Hotspot has its own total
Days − 1 GB: 2 GB on 3 days, 9 GB on 10 days, 25 GB on 26 days, 30 GB on 31 days. Beyond it, hotspot runs at 128 kbps.
5G where available
5G works where your phone, its bands, the location and the network allow it. Elsewhere you’ll connect on KDDI’s 4G LTE. Speed and coverage vary with place, time of day and congestion.
Data only
No phone number, calls, SMS or emergency calls. Keep your home SIM for calls and texts, and use WhatsApp, iMessage or FaceTime over data.
Will my phone work?
Four things your phone needs.
Please check all four before you buy. Once your QR code is shown, the eSIM can’t be refunded.
Made for smartphones and tablets; routers and other devices aren’t guaranteed. Phones with the same name can differ by region, so check your exact model number.
Supports eSIM
Look for “eSIM” in your phone’s specifications.
Carrier-unlocked
On iPhone, Settings › General › About › Carrier Lock should say “No SIM restrictions”. Otherwise, ask your carrier.
LTE Band 18 or 26
The KDDI bands this line needs. Band 1 alone isn’t enough.
Allowed in Japan
Your phone must be permitted for use in Japan.
Compare plans
Three plans. One network.
Three ways to stay online in Japan. Every plan includes hotspot and runs on KDDI (au).
| Unlimited 5GThis plan | Unlimited 10 Mbps | Data Package | |
|---|---|---|---|
| Phone data | Unlimited | Unlimited, up to 10 Mbps | 12, 21 or 30 GB, then 128 kbps |
| Speed | No speed cap · 5G where available | Up to 10 Mbps | Full speed · 5G where available |
| Hotspot | Days − 1 GB, then 128 kbps | Days − 1 GB, then 128 kbps | Shares the same data |
| Plan lengths | 3–21, 26 or 31 days | 3–10 days | 4, 7 or 10 days |
| Fair Usage Policy | Applies | Applies | Applies |
| From | |||
| Choose | View plan | View plan |
Prices in USD. Any taxes are calculated at checkout.
FAQ
Questions about this plan
Is Unlimited 5G really unlimited?
On your phone, yes: no daily cap and no speed cap. Like every plan, it follows the network’s Fair Usage Policy, which looks at your use over the last 3 days. If use is judged excessive, speed may be limited to about 1 Mbps for a while. The exact threshold isn’t published. Hotspot has its own total (days − 1 GB); beyond it, hotspot runs at 128 kbps.
Can I use hotspot?
Yes, on every plan. Unlimited 5G and Unlimited 10 Mbps include a hotspot total of days − 1 GB (2 GB on 3 days, up to 30 GB on 31 days); beyond it, hotspot runs at 128 kbps. A Data Package shares one total between phone and hotspot. Some Android phones need one extra APN setting for hotspot, and our setup guide shows how.
Will my phone work?
Your phone must support eSIM, be carrier-unlocked, support LTE Band 18 or Band 26 (Band 1 alone isn’t enough), and be allowed for use in Japan. The eSIM is made for smartphones and tablets; routers and other devices aren’t guaranteed. Phones with the same name can differ by region, so check your exact model number.
It won’t connect. What should I check?
Check that the eSIM line is on and selected for mobile data. On Android, if the APN isn’t set automatically, choose “5G NET” (not “5G NET for DATA”) or enter it as shown in our setup guide. On iPhone, go to Settings › General › VPN & Device Management and remove any profile left by another carrier, but not the eSIM itself. If it still won’t connect, contact us without deleting the eSIM.
Can I get a refund or extend my plan?
Plans can’t be topped up or extended, so please choose enough days. Until you show your QR code or activation code on My Page, you can cancel for a full refund, even after our email has arrived. After that, refunds aren’t available. If the eSIM then won’t work in Japan, contact us and we’ll check and send a replacement eSIM. Replacements don’t cover phones that don’t meet the requirements, connection settings such as the APN that weren’t applied, or a deleted eSIM.
