# 30k eSIM

> 30k eSIM sells prepaid, data-only travel eSIMs for Japan, from ¥480 (tax included). It is run by MIZUHIKO Co., Ltd. (ＭＩＺＵＨＩＫＯ株式会社), a registered Japanese company in Asakusa, Tokyo (corporate number 5012801024139). Customers pay online and get the eSIM QR code on screen and by email right after payment, install it before flying, and the plan's days only start when the eSIM first connects to a network in Japan.

Last updated: 2026-10-18. Prices are in Japanese yen; the site can show approximate amounts in other currencies, but cards are charged in JPY.

## Plans and prices (Japan)
- 1 GB total, valid 7 days: ¥480 (about US$2.9), tax included
- 3 GB total, valid 15 days: ¥780 (about US$4.8), tax included
- 5 GB total, valid 30 days: ¥1,100 (about US$6.8), tax included
- 10 GB total, valid 30 days: ¥1,780 (about US$10.9), tax included
- 20 GB total, valid 30 days: ¥2,880 (about US$17.7), tax included
- 50 GB total, valid 30 days: ¥5,480 (about US$33.6), tax included

- Data amounts are the total for the whole validity period, not per day.
- Data only: no phone number, no voice calls, no SMS. Keep your normal SIM for calls and texts.
- Hotspot / tethering is allowed; connected devices use the plan's data.
- 4G/5G where available. Coverage and speed depend on local networks and are not guaranteed.
- Up to 5 eSIMs per order (for family or group travel).
- A plan finder on the home page suggests a plan from trip length and usage (light ~150 MB/day, regular ~500 MB/day, heavy ~1.5 GB/day, plus 15% margin).

## Key rules
- Validity starts when the eSIM first connects to a network in Japan, not at purchase or installation. Installing at home before the trip does not use any days.
- Install the eSIM by the install-by date in the order confirmation (install 1-2 days before flying is recommended).
- An installed eSIM works only on that device and cannot be moved to another phone.
- Refunds: an installed eSIM cannot be refunded. A full refund is given if the eSIM cannot be installed or cannot connect and support cannot fix it, except when the phone does not support eSIM or is carrier-locked (no refund in that case). Contact support before installing if you bought the wrong plan.
- The phone must support eSIM and be carrier-unlocked (iPhone XS / XR and later, Google Pixel 3 and later, Samsung Galaxy S20 and later, many other 2019+ flagships; check: dial *#06# and look for an EID).

## How delivery works
1. Pick a plan and pay. Your QR code appears on screen and in your inbox.
2. Before you fly, scan it on Wi-Fi. On iPhone you can install with one tap.
3. When you land, switch data to the eSIM and turn on roaming. Done.

Payment is by card through Stripe (Visa, Mastercard, American Express, JCB, Apple Pay, Google Pay). If a plan is temporarily sold out it is shown as "Restocking soon" and cannot be ordered.

## Company
- Seller: MIZUHIKO Co., Ltd. (ＭＩＺＵＨＩＫＯ株式会社), founded 2025-07-29
- Japanese corporate number (法人番号): 5012801024139 (verifiable at the National Tax Agency corporate number site: https://www.houjin-bangou.nta.go.jp/)
- Address: WPS Asakusa Bldg. 1F, 5-3-1 Asakusa, Taito-ku, Tokyo 111-0032, Japan
- Email: support@30kesim.com (replies within 1 business day)
- Phone: +81 3-6458-1527
- Follow us: [X](https://x.com/30kesim)
- Partner program: hotels, hostels, travel agencies and guides can buy eSIM codes at cost: https://30kesim.com/partners

## Key pages
- [Home, plans and prices](https://30kesim.com/)
- [FAQ](https://30kesim.com/faq)
- [Compatible devices](https://30kesim.com/compatibility)
- [Terms of use (refunds, validity)](https://30kesim.com/terms)
- [Privacy policy](https://30kesim.com/privacy)
- [Specified Commercial Transactions Act disclosure](https://30kesim.com/tokushoho)
- [Partner program](https://30kesim.com/partners)
- [Travel guides](https://30kesim.com/guide/)
- Full text for AI: https://30kesim.com/llms-full.txt

The site is available in 16 languages: English (https://30kesim.com/), 日本語 (https://30kesim.com/ja/), 简体中文 (https://30kesim.com/zh-hans/), 繁體中文 (https://30kesim.com/zh-hant/), 한국어 (https://30kesim.com/ko/), ไทย (https://30kesim.com/th/), Tiếng Việt (https://30kesim.com/vi/), Bahasa Indonesia (https://30kesim.com/id/), Bahasa Melayu (https://30kesim.com/ms/), Filipino (https://30kesim.com/fil/), Español (https://30kesim.com/es/), Français (https://30kesim.com/fr/), Deutsch (https://30kesim.com/de/), Italiano (https://30kesim.com/it/), Português (https://30kesim.com/pt/), Русский (https://30kesim.com/ru/). Other language versions of each page use the same path with a language prefix (for example https://30kesim.com/ja/faq).

## Tokyo travel guides
- [Why you can trust our AI's picks: how every place on this site gets chosen](https://30kesim.com/guide/how-our-ai-picks/): The rules behind every ranked list in our Tokyo guides. Where the data comes from, how the AI scores each place, what we throw out, and why no shop can pay to be here.
- [Akihabara and Nakano: anime, figures, retro games and used cameras in one day](https://30kesim.com/guide/akihabara-nakano/): How to shop Akihabara's electric town and Nakano Broadway for anime goods, figures and retro games, where to look for used cameras in Nakano, Shinjuku and Ginza, how to check condition, the tax-free rules before and after 1 November 2026, and a half- or full-day plan linking both by train.
- [Do ChatGPT, Google Maps, LINE, Instagram, TikTok and WhatsApp work on a Japan eSIM?](https://30kesim.com/guide/apps-work-in-japan-esim/): Yes. Japan does not block mainstream apps or websites, so ChatGPT, Google Maps, LINE, Instagram, TikTok and WhatsApp all work over a Japan travel eSIM like on any other mobile connection; the limits you may meet come from the apps themselves, such as SMS verification or country-based content, not from Japan.
- [How do you avoid roaming charges in Japan when using an eSIM?](https://30kesim.com/guide/avoid-roaming-charges-japan/): You usually do not need to turn off your home SIM. Set the Japan eSIM as your mobile data line, turn off data roaming on your home line, and turn off automatic data switching. Your home number can stay on for texts, but calls and texts may still be charged by your home carrier.
- [Can you buy a SIM card or eSIM at a Japanese airport?](https://30kesim.com/guide/buy-sim-at-japan-airport/): Yes. Narita, Haneda, Kansai and other big airports have SIM counters, vending machines and pocket Wi-Fi desks in the arrivals area, but they cost more, may be closed late at night and can mean a queue. Buying online before you fly is cheaper, and you can still install on arrival over the free airport Wi-Fi.
- [How do you call, book and get verification codes with a data-only eSIM in Japan?](https://30kesim.com/guide/data-only-esim-no-phone-number/): A data-only eSIM has no phone number, so use internet calling and messaging apps, book restaurants online or through your hotel, use a taxi app or a taxi rank, and keep your home SIM switched on alongside the eSIM so you still receive SMS verification codes.
- [Does a Japan eSIM work in rural areas, Hokkaido, Okinawa and Mount Fuji?](https://30kesim.com/guide/esim-coverage-rural-japan/): In most places visitors go, yes. A Japan eSIM connects to local 4G/5G networks where available, which covers cities, towns, main roads, rail lines and popular sights in Hokkaido, Okinawa and onsen areas. Expect gaps in deep mountains, some tunnels, remote trails and small islands.
- [Japan eSIM data ran out: can you top up, or do you need another eSIM?](https://30kesim.com/guide/esim-data-ran-out/): Our Japan plans cannot be topped up; when the data or the days run out, the plan ends and you buy a new plan, which arrives by email right after payment as a separate eSIM to install, from ¥480 for 1GB.
- [Can you use a Japan eSIM as a hotspot for a laptop or friends?](https://30kesim.com/guide/esim-hotspot-tethering/): Yes. Our Japan eSIM allows hotspot (tethering), so you can share data with a laptop, tablet or a friend's phone. Everything the connected devices use comes out of your plan's data, and laptops can use a lot in the background, so choose a bigger plan if you will share.
- [eSIM vs pocket Wi-Fi vs SIM card in Japan: which should you choose?](https://30kesim.com/guide/esim-vs-pocket-wifi-vs-sim/): For one or two travellers with eSIM-capable, unlocked phones, an eSIM is usually the cheapest and simplest option. Pocket Wi-Fi makes sense for groups sharing one connection or for phones that cannot use eSIM; a physical SIM is the fallback for older unlocked phones.
- [Family or group trip to Japan: one eSIM each, or share one phone's hotspot?](https://30kesim.com/guide/family-group-esim/): For most families and groups, one eSIM per phone is the better choice because everyone can split up, navigate and keep their battery; sharing one hotspot saves a few hundred to a few thousand yen but only works while you stay together. You can buy 1 to 5 eSIMs in one order.
- [How to install an eSIM on Android (Pixel, Galaxy and others)](https://30kesim.com/guide/install-esim-android/): First dial *#06#; if an EID number appears, your Android phone supports eSIM. Then, on Wi-Fi before you fly, add the eSIM by scanning the QR code (on a Pixel under Settings, Network & internet, SIMs; on a Galaxy under Settings, Connections, SIM manager), and after landing turn on roaming for it and make it your mobile data SIM.
- [How to install a Japan eSIM on iPhone (before you fly)](https://30kesim.com/guide/install-esim-iphone/): Install the eSIM at home over Wi-Fi a day or two before your flight, label it, and leave it switched off. After landing, turn the line on, turn on Data Roaming for it and set it as your Cellular Data line. Step-by-step paths and fixes for common errors below.
- [How much mobile data do you need in Japan for 3, 5, 7, 10 or 14 days?](https://30kesim.com/guide/japan-data-how-much/): Light users need about 0.5 GB for 3 days and 2.5 GB for 14 days; typical users about 1.7 GB for 3 days and 8 GB for 14 days; heavy users 5 GB to 24 GB. Here is the full breakdown and which plan fits.
- [Mount Fuji day trip from Tokyo: Kawaguchiko and the Fuji Five Lakes](https://30kesim.com/guide/mount-fuji-kawaguchiko/): How to get from Tokyo to Lake Kawaguchi by bus or train, which viewpoints are worth the time, how to read the weather for a clear view of Fuji, and a realistic one-day plan with the return leg worked out.
- [Is my phone carrier-locked? How to check on iPhone and Android](https://30kesim.com/guide/phone-carrier-lock-check/): On iPhone, go to Settings, General, About and look at Carrier Lock; "No SIM restrictions" means it is unlocked. On Android there is no single setting, so the surest checks are trying another carrier's SIM or asking your carrier. Phones bought on instalments or prepaid deals from a carrier are the ones most often locked.
- [Riding Tokyo trains with an eSIM: does Suica or PASMO on your phone need data?](https://30kesim.com/guide/suica-pasmo-phone-data/): Tapping a Suica or PASMO on your phone at the gate works without mobile data or Wi-Fi; you need a connection only to set it up and top it up. Route planning is what uses your eSIM data, and it is light: about 100 MB or less on a full day of getting around.
- [Tokyo night views: free and paid observation decks compared](https://30kesim.com/guide/tokyo-night-views/): Which Tokyo observation decks are free, which are worth paying for, how to time a booking for sunset, and how to pair each view with dinner or a walk nearby.
- [Rain in Tokyo: how to spend the day indoors without wasting it](https://30kesim.com/guide/tokyo-rainy-day/): Underground routes around Tokyo Station and Shinjuku, museums and teamLab, department store food halls, arcades, aquariums and covered shopping streets, with rainy-day plans by area and practical notes on umbrellas, typhoons and rain radar.
- [When does a Japan eSIM plan start counting days?](https://30kesim.com/guide/when-esim-plan-starts/): Our Japan eSIM plans start counting days when the eSIM first connects to a network in Japan, not when you buy or install it, so installing at home before you fly does not use up any days.
- [No shop paid us: the Tokyo yakitori an AI chose from 14 traveller posts, from 50-yen skewers to 8-seat counters](https://30kesim.com/guide/izakaya-yokocho/): Our AI read 14 traveller posts (saved 8,516 times), scored 27 yakitori bars and izakaya, confirmed 17 and kept 8: from a cheap skewer chain to counters you book weeks ahead, with what to order, prices, booking and how to avoid tourist traps in Tokyo's yokocho alleys.
- [Stop following influencers: 12 Tokyo autumn leaf and light spots an AI picked from 37 traveller posts saved 32,041 times](https://30kesim.com/guide/tokyo-autumn-leaves/): Our AI read 37 traveller posts about autumn in Tokyo, scored 55 places and kept the 12 that held up. Ginkgo avenues, maple gardens, evening light-ups, the Christmas lights of Roppongi and two day trips, with when they usually peak, what they cost, how to get there and how to beat the crowds.
- [No bar paid us: 10 Tokyo bars an AI picked from 14 traveller posts saved 12,177 times](https://30kesim.com/guide/tokyo-bars/): Our AI read 14 traveller posts about drinking in Tokyo, scored 23 bars and kept the 10 that held up. Cocktail counters, a hotel bar on the 39th floor, a vinyl listening room and a cheap movie-themed basement, with what to order, what it costs and how to get in.
- [No cafe paid us: the 13 Tokyo coffee and dessert spots an AI picked from 22 traveller posts](https://30kesim.com/guide/tokyo-cafes/): Our AI read 22 traveller posts saved 37,631 times, scored 64 Tokyo cafes and dessert shops, and kept 13. Here is which ones, what to order, what it costs, how long the queue is and how to get there.
- [Stop following influencers: the Tokyo eating shortlist an AI built from 116 traveller posts](https://30kesim.com/guide/tokyo-food/): Ramen, sushi, yakiniku, yakitori, cafes, bars and the odd things in between. Our AI read 116 traveller posts saved 215,025 times and kept only the places it could confirm are open. No shop paid to be here.
- [Stop following influencers: an AI scored 39 Tokyo spots, and these 3 walks won](https://30kesim.com/guide/tokyo-hidden-spots/): Our AI read 9 traveller posts saved 18,530 times, scored 39 places and kept the walkable neighbourhoods that came out on top: Sangenjaya to Shimokitazawa and the cat temple, the Kuramae and Asakusa back streets, and Daikanyama down to Nakameguro, with the exact cafés, shops and snacks inside each.
- [I only trust ramen an AI picked for me: 10 Tokyo bowls from 14 traveller posts](https://30kesim.com/guide/tokyo-ramen-guide/): Our AI read real traveller posts and public ratings, scored 32 Tokyo ramen shops and kept the 10 it could verify. Which shop, what to order, what it costs, how bad the queue is and how to get there. No shop paid to be listed.
- [No shop paid us: 10 Tokyo stores an AI picked from traveller posts saved 52,646 times](https://30kesim.com/guide/tokyo-shopping/): Four Tokyo shopping routes, from Omotesando to Shibuya, Shinjuku, Ginza and Ebisu to Nakameguro, with the specific stores our AI ranked from real traveller posts, what to buy in each, rough prices, floor tips and the tax-free rules before and after 1 November 2026.
- [No shop paid us: 10 Tokyo sushi spots an AI picked from 12 traveller posts saved 17,069 times](https://30kesim.com/guide/tokyo-sushi/): Our AI read 12 traveller posts about sushi in Tokyo, scored 41 places and kept the 10 that held up, from an ¥80-a-piece standing bar to a ¥30,000 Roppongi counter. What to order, what it costs, and how to get a seat at each one.
- [No shop paid us: 10 Tokyo yakiniku grills an AI chose from 16 traveller posts saved 16,948 times](https://30kesim.com/guide/tokyo-yakiniku/): Our AI read 16 traveller posts about yakiniku in Tokyo, scored 42 places and kept the 10 that held up. Premium wagyu counters, mid-price grills, a late-night spot that works for one, and two offal specialists, with what to order, what it costs and how to get a table.
- [One day in Asakusa, planned by people who work here](https://30kesim.com/guide/asakusa-one-day/): How to see Senso-ji without the worst of the crowds, which side streets to walk, when Kappabashi is open, and how to end the day by the Sumida River with a view of Skytree.
- [How to choose a Japan eSIM: data, compatibility and setup](https://30kesim.com/guide/japan-esim-guide/): How much data a Japan trip really uses, how to check your phone works with eSIM, when to install, when the plan starts, and what to do if it does not connect.
- [Shibuya and Harajuku in one day: the crossing, the shrine and the side streets](https://30kesim.com/guide/shibuya-harajuku/): Where to watch Shibuya Crossing for free or from a rooftop, how to walk from Meiji Jingu through Harajuku and Omotesando, and when to add Shimokitazawa. Practical notes from a team based in Tokyo.
- [A night in Shinjuku: yokocho alleys, Golden Gai and free city views](https://30kesim.com/guide/shinjuku-night/): How to spend an evening in Shinjuku: eating in Omoide Yokocho, drinking in Golden Gai without breaking the house rules, where to see the city lights for free, and how to avoid the Kabukicho bar scams.
- [Three days in Tokyo: a realistic first-timer's plan, area by area](https://30kesim.com/guide/tokyo-3-day-itinerary/): A three-day Tokyo itinerary that groups sights by neighbourhood so you spend your time walking, not on trains. Old Tokyo, the west side's crowds and lights, and the bay and food markets, with what to book ahead.
- [Day trips from Tokyo: Kamakura, Hakone, Nikko and Kawagoe](https://30kesim.com/guide/tokyo-day-trips/): How to reach four easy day trips from Tokyo, which rail passes actually save money, how long to allow, and what to see once you arrive.
- [Tokyo museums and teamLab: what to book, when, and how](https://30kesim.com/guide/tokyo-museums-teamlab/): How booking works for teamLab Planets and Borderless, the Ghibli Museum and the Mori Art Museum, plus the reopened Edo-Tokyo Museum and the national museums in Ueno. Practical notes for visitors, checked in October 2026.
- [Tokyo trains for first-timers: Suica, PASMO and getting from the airport](https://30kesim.com/guide/tokyo-trains-ic-card/): How Tokyo's rail network fits together, how to get a Suica or PASMO (including on iPhone), when the Tokyo Subway Ticket pays off, how to avoid rush hour, and the best ways in from Narita and Haneda.
- [Tsukiji or Toyosu? A practical guide to Tokyo's fish markets](https://30kesim.com/guide/tsukiji-toyosu-seafood/): The difference between Tsukiji Outer Market and Toyosu Market, how the tuna auction viewing lottery works, what to eat at each, and when to go so you do not arrive to closed shutters.
- [Ueno and Yanaka: museums, a market street and old Tokyo on foot](https://30kesim.com/guide/ueno-yanaka/): A walking day from Ueno Park and its museums through the Ameyoko market to the quiet lanes of Yanaka and Nezu Shrine, with closed days, timing and a route that works.