From Japan, for Japan
eSIM Japan Infinite is our flagship unlimited-data plan for Japan, powered by the KDDI au 4G/5G network. Choose from 3 to 31 days and enjoy unlimited high-speed data throughout your trip without monitoring a data balance.
Ideal for Google Maps, social media, messaging and video streaming while travelling across Japan. Hotspot sharing is included with a separate allowance based on your selected plan.
Hello1010 has tested this connection at speeds of up to 1,132 Mbps on 5G. Actual speeds vary depending on location, device, network conditions and coverage.
Why KDDI au? In Opensignal's April 2026 Japan Mobile Network Experience report, au won both Reliability Experience and Consistent Quality, making it one of Japan's strongest-performing mobile networks for everyday connectivity. Combined with Hello1010's own 5G testing of up to 1,132 Mbps, eSIM Japan Infinite is built for travellers who want fast, dependable connectivity without worrying about their data balance.
KDDI au coverage: Check KDDI au network coverage
Swipe to see your free treat options →
Buy 1 KDDI Infinite eSIM, get 1 FREE treat in Japan
Choose one (1): Ice no Mi Grape Muscat, or Machi Cafe Coffee (Hot or Iced). Redeem at any Lawson in Japan before 31 October 2026. While stocks last.
How it works
- Buy an eSIM Japan Infinite Data plan.
- Your unique Lawson code arrives in your eSIM confirmation email.
- Enter the code on the redemption page to reveal your barcode*.
- Show the barcode at any Lawson in Japan to claim your free treat.
*If you redeemed and got the barcode before arriving in Japan, screenshot it for later use because you cannot re-redeem the code again to show the barcode.
Terms & Conditions
- Available with the purchase of an eSIM Japan Infinite Data (KDDI Infinite) plan from Hello1010, while stocks last (limited to 500 codes).
- Each qualifying Infinite eSIM includes one (1) unique code, valid for one (1) free treat. One redemption per code.
- Choose one (1) item only: Ice no Mi Grape Muscat, or Machi Cafe Coffee (Hot or Iced). Take-away (To-Go) redemption only.
- Redeemable only at Lawson convenience stores in Japan, subject to stock availability at the store.
- The code must be redeemed and the treat claimed on or before 31 October 2026. Codes are void after this date.
- To redeem, enter your code on the redemption page to reveal a barcode, then present it at the Lawson counter.
- Product images are for illustration purposes only. Actual product may vary.
- Codes are non-transferable and cannot be exchanged for cash, credit, or any other item.
- Hello1010 reserves the right to amend, suspend, or withdraw this promotion at any time without prior notice.
Redemption page: spot.petit.gift/campaigns/kddi2608whiteb
Peace of Mind
Install the eSIM in your phone first and arrive in Japan connected instantly. You will get connected right after you land and experience the fastest Mbps from start to end of your journey. Remember to install it within 30 days from date of purchase.
Infinite (Unlimited) Data
Choose 3, 5, 7, 8, 9, 10, 12, 15, 18, 21, 26 or 31 days
Hotspot Quota
- Use QR code in Japan within 30 days from purchase
- No phone number, Cannot call, SMS, top up
- TikTok and all social apps usable
- eSIM cannot be reinstalled once it has been removed from the device
Country List
Country List
Compatible Phone List
Compatible Phone List
Product FAQ
Product FAQ
Speed Test Results
Speed Test Results
 |
 |
| Hokkaido, Japan (2024) |
Osaka, Japan (2024)
|
Speed-test results are for reference only and may vary by location, device, network conditions and time of use.
K
My Japan trip eSIM experience has been quite good. Only certain mountain areas had zero signal, but overall it was great.
c
Overall, satisfied with this product. Recommended!!
J
no interuption at all. can open any apps without thinking the limited data. so far so good. recommended.
M
Im travel to sapporo for 11 days, i using infinite data plan, speed was awesome all area. but after 5th day my Internet become slow, i contact cs via WhatsApp, cs reply was very fast! and my problem solved. Will repeat this esim again and again.
N
I used this eSIM during my trip in Japan and the experience was excellent.
The internet connection was very stable and fast everywhere I went — no lag at all.
Uploading Instagram stories and videos was super quick and smooth.
Very easy to activate and truly unlimited data as promised.
Highly recommended for anyone traveling to Japan. Will definitely use this again on my next trip.
S
My vacation with Hello1010 was amazing. No hiccups with connecting wherever I go. 👍
A
Use RM59 unlimited Japan eSIM from 12 -19 October 2025. From the buying of the eSIM until i activated the eSIM it is pretty easy process. There is no No Coverage or line drop for that 7 days in Japan ! I even use the Google GPS driving to Fuji!
Just one little issue: i activated the eSIM at KLIA at 8:30am 12/10 and on 19/10 at 8:30M at Kansai airport the Service is ended. Normally it ended at 12am on the last day (19/10) that is only my “complaint”.
I
Fast and furios.
N
I highly recommend the eSIM from Helo1010 for travelers going to Japan. The data is unlimited and there’s no lag. Installation is also very easy.
K
I used the hello1010 eSIM during my 9-day trip to Osaka, Japan, and I was extremely satisfied with its performance. I consistently got 5G coverage in almost every area I visited – from busy city centers to more remote tourist spots.
The internet speed was impressive, averaging between 790–860 Mbps, and the unlimited data meant I never had to worry about running out, even with heavy use for navigation, social media, and streaming.
Setting up the eSIM was quick and simple — just scanned the QR code provided, and the connection was up and running instantly without any issues.
Highly recommended for anyone traveling to Japan! If you're looking for a fast, reliable, and unlimited internet solution, hello1010 is definitely worth it.
C
First time using esim from hello1010 and it was really great! Stable and strong line signal, no interruption at all. Definitely will use another eSim from hello1010 when I travel again in May 2025. Thank you
P
Everything is smooth and easy. Speed is good. Connection is stable.
H
Next time we must get again,very good line
a
no issues, 5g all the way
P
No fuss and totally swift set up. Instant replies from WhatsApp help. All my family members are asking for my eSIM recommendations after they see how I use my data unlimited in Japan Hokkaido. Even very rural place my line still the strongest. Good job!
A
NO LAG! VERY MINDFUL, VERY DEMURE!
M
Amazing .very good for travelling..
A
Very good internet connection! Highly recommended.
A
Bagus...
A
Have no issue as I am Hiking Mt Fuji, almost full way have connection.
N
Easy, convenient & signal was good. The only comment is that when I WhatsApp your customer careline number until now no response. I had a slight problem earlier during connection but resolved by myself. So i hope your customer careline will be more responsive.
Hi Nik, thank you for your feedback, and we’re glad to hear that the connection was good.
We sincerely apologies for the delay in our response. We’re currently experiencing a technical issue with WhatsApp’s username feature, where messages sent by users who are using a WhatsApp username are not reaching our customer care team.
Our team is currently working on fixing this issue, and we’re sorry for the inconvenience caused. We appreciate your patience and we hope to have this issue resolved soon.
C
Loved it
E
Great experience and very good price!
S
Strong network coverage. The network is a little weak in some country side areas but overall satisfied with the product.