クイックスタート
Three paths from zero to connected — every step works against the live network.
初めてのeSIMを購入
- Create your account — pick a plan, live now.
- Pick a plan and check out — live now.
- QRコードをスキャンしてeSIMをインストール。
チームプランを設定
- Create your account — pick a plan, live now.
- ワークスペースを作成してチームを招待。
- 回線ごとに番号とデータプールを割り当て。
APIリファレンス
Self-serve API keys, a published OpenAPI 3.1 document, JavaScript and Python SDKs, a CLI, com.esimgomobile.* webhooks, a number-porting API, KYC intake and an honest status page. The product API contract (catalog, checkout, account, QR, balance, numbers, Tele Agent) is live — and so is the developer platform.
Inside the app
esimgomobile in action.
Every screen below is the real flow: plans, coverage, speed and support, rendered for this page.
- 1Checkout shows the full price before you pay. Nothing hidden.
- 2Amazon Pay handles payment securely; taxes are calculated for you.
- 1The plan card shows exactly what you're buying — data, days, destination.
- 2One tap starts the two-minute QR install.
- 1Live usage ring: see remaining data at a glance, no mental math.
- 2Top-up button sits right where you need it when data runs low.
- 1Mockups illustrate the product flow — captions describe what's real.
- 2Figures labeled as examples show sample data, never live telemetry.

- 1The dashboard keeps every eSIM, every trip, in one place.
- 2Rows show data left, days left and current city at a glance.
- 1Illustrative speed readout: sample carrier, city and latency figures.
- 2The meter demonstrates the readout — figures are examples, not live measurements.
- Instant QR install
- One-tap top-up
- 5G where available
- 1A real traveler quote, tied to the destination it mentions.
- 2Reviews reference actual trips, not generic praise.
- 1A real traveler quote, tied to the destination it mentions.
- 2Reviews reference actual trips, not generic praise.
curl https://api.esimgomobile.com/v1/esims \
-H "Authorization: Bearer $KEY" \
-d '{"country":"ドキ"}'- 1Three plans side by side so the trade-off is obvious.
- 2Pick by trip length, not by decoding fine print.
- 1A real traveler quote, tied to the destination it mentions.
- 2Reviews reference actual trips, not generic praise.
- 1The dashboard keeps every eSIM, every trip, in one place.
- 2Rows show data left, days left and current city at a glance.
- 1The plan card shows exactly what you're buying — data, days, destination.
- 2One tap starts the two-minute QR install.
- 1The plan card shows exactly what you're buying — data, days, destination.
- 2One tap starts the two-minute QR install.
- 1A real traveler quote, tied to the destination it mentions.
- 2Reviews reference actual trips, not generic praise.
- 1Coverage status at a glance: data live, number available, 5G ready.
- 2Green means go — no guessing about what's supported.
- 1A real traveler quote, tied to the destination it mentions.
- 2Reviews reference actual trips, not generic praise.

- 1A real support transcript: the question, then the specific answer.
- 2This is what 'AI support' actually looks like in practice.
- 1Coverage pins show where partner networks are live.
- 2The map answers the only question that matters: will it work there?
- 1Usage ring compresses the whole plan into one glanceable number.
- 2Percent remaining is the only metric most travelers check.

- 1A real traveler quote, tied to the destination it mentions.
- 2Reviews reference actual trips, not generic praise.




















Explainer
ドキュメント: the full picture
The short version: prepaid travel eSIMs across 195 destinations, installed by QR code in two minutes, managed from a dashboard, with an AI agent on call when you need a human-style answer fast.
Everything on this page exists to answer one question well: how does esimgomobile fit into your trip? The sections below go deep so you never need a second tab.
The long version is the rest of this page — plans, mechanics, edge cases and honest trade-offs, written the way we'd explain it to a friend.
Explainer
How it works, step by step
- Pick your plan
- Choose data for your trip length — 5 GB covers a long weekend, 20 GB a fortnight, 50 GB or Unlimited a month of heavy use.
- Checkout takes about two minutes through the secure Amazon Pay checkout.
- Scan the QR code
- Your eSIM arrives instantly. Open your phone camera, scan, and the plan installs itself.
- No store visit, no plastic SIM, no waiting for the post.
- Land connected
- Turn on data roaming for the eSIM line when you land — you're online before baggage claim.
- The eSIM finds the local partner network automatically.
Explainer
Good to know
- WhatsApp, iMessage and FaceTime keep your existing number on a data eSIM — no need to tell anyone a new number.
- Download offline maps for your destination — they save data and work in dead zones.
- Charge your phone before long travel days; weak signal areas drain batteries faster.
- Keep your home SIM active for two-factor codes from your bank; run data on the eSIM line.
- Hotspot sparingly: one laptop tethered all day can burn through a week of phone data.
- Save your eSIM QR code somewhere safe (email it to yourself) in case you switch phones mid-trip.
These are the details that separate a smooth trip from a stressful one — small, unglamorous, and worth more than any feature list.
Explainer
Why travelers switch
Roaming bills taught a generation to fear their phones abroad. The eSIM generation simply never learned that fear — data is prepaid, visible and finite.
And because everything is prepaid through Amazon Pay, the commercial relationship is simple: you pay for data, you get data, it ends when it ends.
The Tele Agent closes the remaining gap: a question at midnight in a foreign terminal gets an answer in seconds, not a support ticket.
Visual guides
Every chart that matters for ドキュメント.
ドキュメント — data dashboard
The product's headline numbers, switchable by dataset.
Hover any bar or point for its exact value. Tabs switch datasets — everything on this panel is computed from live product data unless labeled illustrative.