Trust score 4.5
Device Compatibility: Most modern smartphones are fully compatible with Blikst Japan eSIMs. However, a few exceptions exist. Check our detailed compatibility list to confirm your device works flawlessly with our service..
Activation Policy: Enjoy automatic activation by simply scanning the QR code provided after purchase. Your eSIM will instantly activate upon your arrival at Japan, ensuring immediate connectivity.
Delivery Time: Receive a confirmation email with your Japan eSIM details right after completing your purchase. Quick and seamless delivery ensures you’re ready to go in minutes.
Additional Information: All unlimited Japan plans include 3 GB of high-speed data per day. After this is used, data continues at 256 Kbps with unlimited access. Your 3 GB high-speed allowance resets daily at midnight.
Japan is not a country where you want to be offline. Train platforms look identical in kanji, rural buses run on paper schedules, and the IC-card tap-to-pay system assumes you've got a working data connection for the balance-refill apps. A Blikst Japan eSIM runs on KDDI's au network — the same infrastructure most international roaming SIMs use — with full LTE across Honshu, Kyushu, Shikoku, and Hokkaido, and 5G in Tokyo, Osaka, Kyoto, Nagoya, Sapporo, Fukuoka, and along the Shinkansen corridor.
Tokyo, Osaka, Kyoto, and the Tōkaidō Shinkansen line between them have blanket 5G. Rural Hokkaido north of Asahikawa, the interior of Kyushu's volcanic regions (Kirishima, Aso), and the Iya Valley on Shikoku fall back to 4G — still usable for maps and messaging. Underground in Tokyo Metro and Osaka Metro, signal drops between stations but recovers at every platform. The Tokyo–Osaka Shinkansen has working data almost the entire route except for tunnels.
Japan's traditional traveller option is a rental pocket Wi-Fi router, which runs about ¥800–¥1,200 per day (£4–£7) and has to be picked up and returned. A Blikst 30-day 10 GB plan costs less than five days of a pocket Wi-Fi rental, doesn't require queuing at the airport counter, and doesn't give you a second device to charge or lose. Unlimited plans include 3 GB per day at high speed (same as most pocket Wi-Fi contracts), then continue at 256 Kbps — enough for messaging and maps, not enough for video.
Unlimited plans on this KDDI line need IMEI and EID numbers plus your activation date — provide those at checkout at least 2 days before you land. The plan activates automatically on your chosen date. Limited-GB plans (1 GB to 100 GB) use the standard QR-code scan and activate on first use in Japan. Install the profile on your phone before you fly; airport Wi-Fi at Narita and Haneda is free but crowded, and you do not want to be debugging an eSIM install in a jet-lag fog.
One-week Tokyo-only trip: 3–5 GB is plenty. Two-week Tokyo–Kyoto–Osaka classic route: 10 GB. Three-week Japan-rail-pass grand tour with multiple cities and regional lines: 20 GB or the unlimited plan. Remote-work visitors staying a month should go unlimited; the 3 GB/day soft cap is the pocket-Wi-Fi default and is hard to exceed without heavy streaming.
Land at Narita, Haneda, Kansai, or New Chitose with your Blikst eSIM already active. Skip the pocket Wi-Fi counter, skip the international roaming bill, and spend the time looking up where the good ramen is instead.
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Use the provided step-by-step guide to set up and activate your eSIM in few minutes. Then enjoy your trip to Japan.
Learn MoreDiscover Japan with Easy Connection
Japan is full of amazing contrasts, busy cities, peaceful temples, beautiful nature, and traditions everywhere you go. While exploring, staying online should be simple. With a Blikst Japan eSIM, you can connect as soon as you arrive. No searching for SIM card shops, no swapping tiny cards. Just activate it and start your trip.
Stay Connected in Tokyo
Tokyo is exciting and fast, with bright lights, great food, and endless things to see. Your Blikst eSIM helps you move around without stress. Check train routes, find restaurants, look up opening times, or share your photos from Shibuya or Asakusa instantly. You don’t have to rely on slow hotel wi-fi, everything works right away on your phone.
Explore Kyoto, Osaka & Beyond
In Kyoto, you can look up temple info or directions while walking through beautiful gardens. In Osaka, find the best street food, check travel times, or plan fun nights out. If you visit Hokkaido, Okinawa, or smaller towns, your eSIM keeps you online so you can check maps, book tickets, or stay in touch with family.
Affordable and reliable. Traveled to the US for a trip and used blikst. It was much more affordable than other companies and was very
Smooth, simple, just works. Use it again.
Quick activation and stable connection. Super handy 🌟 Used it during my trip in Madeira.
Lovely support, got an esim for UK. Had no issues.
I used to have 3 mobile but the internet connection was not the best, that’s why I started to use Blikst and I find it very useful
The Blikst Japan eSIM runs on KDDI's au network (network provider: KDDI / IIJ), the same infrastructure most international roaming SIMs use. You get both 4G and 5G speeds, with full LTE across Honshu, Kyushu, Shikoku and Hokkaido, plus 5G in Tokyo, Osaka, Kyoto, Nagoya, Sapporo, Fukuoka and along the Shinkansen corridor. It is one of Japan's strongest, most reliable networks for travellers.
Coverage spans Japan nationwide. Tokyo, Osaka, Kyoto and the Tokaido Shinkansen between them have blanket 5G, and the Tokyo to Osaka line keeps data the whole route except inside tunnels. Be honest about the weak spots: rural Hokkaido north of Asahikawa, Kyushu's volcanic interior around Kirishima and Aso, and the Iya Valley on Shikoku fall back to 4G, which is still fine for maps and messaging. Underground on the Tokyo and Osaka Metros signal dips between stations but recovers at every platform.
Right after purchase you get a confirmation email with your eSIM details. Limited-GB plans from 1 GB to 100 GB use a standard QR-code scan and activate on first use in Japan. Unlimited plans on this KDDI line are different: you must supply your IMEI and EID numbers plus an activation date at checkout, at least two days before you land, and the plan then activates automatically on your chosen date. Install the profile before you fly rather than wrestling with it on crowded airport Wi-Fi.
Most modern smartphones work fully with Blikst Japan eSIMs, though a few exceptions exist, so check our detailed compatibility list to confirm your device. Your phone also needs to be carrier-unlocked and eSIM-capable. On iPhone, look under Settings, General, About for an EID number; on Android, check your network or SIM settings for eSIM support. If you can find an EID, you are almost certainly good to go.
It depends on your route. A one-week Tokyo-only trip is comfortable on 3 to 5 GB. The classic two-week Tokyo, Kyoto and Osaka route suits about 10 GB. A three-week rail-pass grand tour across multiple cities and regional lines is better on 20 GB or an unlimited plan. Navigation is the main drain, so budget roughly 500 MB a week just for maps if you move between cities daily. Google Translate's camera mode can also eat around 100 MB a day.
Yes, tethering and hotspot are supported, so you can share your connection with a laptop, tablet or a travel companion's phone. On unlimited plans, be aware of the fair-usage terms: you get 3 GB of high-speed data per day, and once that is used data continues unlimited at 256 Kbps, which is enough for messaging and maps but not video. That daily high-speed allowance resets at midnight, so a heavy hotspot session is best kept within the 3 GB window.
These are data-only plans, so they do not come with a Japanese phone number for traditional calls or SMS. In practice that is rarely a problem: with a working data connection you can call and message over the internet using apps like WhatsApp, FaceTime or Messenger. Because an eSIM is a separate digital line, you can keep your physical home SIM and number in the phone, leaving it active for important texts while you browse on the Blikst data.
It usually works out far cheaper than the traditional options. Japan's pocket Wi-Fi router rentals run about 800 to 1,200 yen a day, roughly 4 to 7 pounds, and have to be collected and returned. A Blikst 30-day 10 GB plan costs less than five days of pocket Wi-Fi, with no airport counter queue and no second device to charge or lose. Unlimited plans even match the typical 3 GB-per-day pocket Wi-Fi allowance, so you skip both the rental and the roaming bill.
