日本 eSIM
日本で使えるモバイルデータ。ローミング料金なし、すぐに開通、iPhone・Samsung・Androidにワンタップでインストール。
プランを選ぶ
- 3G/4G/5G ネットワーク速度
- 必要なときにいつでもチャージ
- 即時開通・テザリング対応
- 24時間年中無休サポート・契約不要
- 24時間ごとに高速データ1 GB
- データ無制限（高速データ消費後は最低1 Mbps）
- 3G/4G/5G · 即時アクティベーション · テザリング対応
- 24時間年中無休サポート・契約不要
日本 eSIMの全プランと料金
| データ | 有効期間 | 価格 | 1GBあたり |
|---|---|---|---|
| 1GB | 7日間 | $1.99 | $1.99 |
| 2 GB | 15日間 | $2.49 | $1.25 |
| 3 GB | 15日間 | $3.49 | $1.16 |
| 3 GB | 30日間 | $3.49 | $1.16 |
| 5 GB | 30日間 | $4.99 | $1.00 |
| 10 GB | 30日間 | $7.99 | $0.80 |
| 20 GB | 30日間 | $13.99 | $0.70 |
| 50 GB | 30日間 | $26.99 | $0.54 |
| 50 GB | 180日間 | $43.99 | $0.88 |
| 1日1GB | 1日無制限 | $1.99 / 日 | — |
| 1日2 GB | 1日無制限 | $2.99 / 日 | — |
| 1日3 GB | 1日無制限 | $3.99 / 日 | — |
| 1日5 GB | 1日無制限 | $7.49 / 日 | — |
| 1日10 GB | 1日無制限 | $8.49 / 日 | — |
日本 eSIMはどのプランを選べばいい？
1日の目安：地図2時間、通話数回、短いビデオ通話、WhatsAppでの写真、リールやTikTokを30分 — 1日あたり約1 GB。
-
週末または3日間
約3 GB 3 GB · 15日間
$3.49 -
7日間
約7 GB 10 GB · 30日間
$7.99 -
14日間
約14 GB 20 GB · 30日間
$13.99 -
30日間
約30 GB 50 GB · 30日間
$26.99 -
毎日の動画視聴とテザリング
1日無制限
$1.99 / 日から
スクロールやストリーミング、テザリングが多めなら、ワンサイズ上か1日プランを選びましょう。
ご利用の流れ
- ステップ01 プランを選ぶ 旅行に合ったデータ量と有効期間を選びます。
- ステップ02 注文メールを受け取る eSIMはすぐにメールで届きます。
- ステップ03 ワンタップでインストール インストールをタップし、到着したらデータ通信をオンにします。
日本
チャージ
データが残り少ない？柔軟なデータチャージですぐに追加できます。
よくある質問
How does an eSIM help with getting around and exploring Tokyo in 日本?
You roll your suitcase through Haneda Airport with your next stop already open in Google Maps, passing the SIM counter queue instead of joining it. You follow the train route into Tokyo, then use Uber for the ride from the station to your hotel. With your bag dropped off, you head to Asakusa and follow the lanes toward Senso-ji, pausing when a display of plastic noodle bowls catches your eye.
Google Translate helps you read the menu, and you order the bowl with the toppings you actually want. You book a food tour through Klook, then pay for a convenience-store snack with Apple Pay. A guide sends your meeting details through LINE, which locals use too. Back at your hotel, you browse Uber Eats for dinner and send a photo of the temple lantern home before choosing what to eat.
What should I look for in a tourist eSIM for 日本?
Look for local network access along your route, whether you are exploring Tokyo, Kyoto or Osaka, plus support for sharing data and adding more when needed. This plan connects to supported local networks, offers hotspot on most packages and supports data top-ups.
Choose an eSIM you can prepare before flying. This one installs from the button in your order email, with 180 days from purchase to activate. Activation starts when it connects to a supported network at your destination. Your chosen package determines the data allowance and validity.
Where will my tourist eSIM have the strongest coverage in 日本?
Your eSIM uses local networks including KDDI, with 3G/4G/5G coverage strongest in cities and main tourist areas such as Tokyo, Kyoto, Osaka and Hiroshima. Major rail corridors and populated resort areas also have broad coverage. Reception becomes patchier in the Japanese Alps, the mountainous interior of Hokkaido and the smaller outer islands of Okinawa.
| SimSwift eSIM | Local SIM | Roaming | |
|---|---|---|---|
| Setup | Install at home before you fly | Find a shop or airport kiosk and queue after landing | Nothing to install; switch roaming on |
| When you're connected | On landing, when connected to a supported network | After purchase and setup | On landing if your home plan includes roaming here |
| Paperwork / ID | No paperwork needed | ID may be requested at the counter | No new registration beyond your existing home account |
| Cost predictability | Pay once upfront for your chosen package | Buy on arrival at local rates | Depends on what your home plan includes |
| WhatsApp & your number | Keep using WhatsApp on your home number | New local number; WhatsApp stays on your home number | Your home number, on your home plan's roaming terms |
| Top-ups | Add data anytime with a top-up | Add data through the provider or a retail outlet | Extra data options depend on your home plan |
What practical tech and payment tips should I know before visiting 日本?
- Save offline maps of Kyoto before exploring its narrow lanes, and save your accommodation address in Japanese for showing drivers.
- Carry a Type A plug adapter; check that your charger supports the local voltage before packing it.
- Keep cash for small restaurants, temple admission and rural shops, even when larger stores accept cards.
- Treat cafe and station Wi-Fi as a bonus; some access screens require registration before you can browse.
- Put your device on silent aboard trains, and step away from busy platform paths before studying directions.
- Carry a power bank for navigation and photography, especially in Hokkaido, where cold weather drains batteries faster.
日本 eSIMの料金はいくらですか？
SimSwiftの日本 eSIMは、1GB・7日間有効で$1.99からご利用いただけます。無制限デイリープランは1日$1.99からです。