Help centre

Japan eSIM help: every answer, before and during your trip

A question about your Japan eSIM? Search below or browse our guides: compatibility, installation, calls, hotspot, data usage… And if you need it, a human replies 7 days a week.

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🛒 Before you buy 📲 Installation & activation 🇯🇵 In Japan

⚡ QR code by email in 2 min 📶 NTT docomo 4G/5G network 💬 Support 7 days a week

Step-by-step guides

Choose your stage of the trip

Ten short, practical guides, ordered the way your trip unfolds — from ordering to landing in Japan. Every question, its answer.

🛒 Before you buy

Compatibility, when to order, how many eSIMs: check everything calmly before you pay.

Is my phone eSIM compatible? →iPhone, Samsung, Google Pixel… check your model in our database of 650+ devices. Is my phone carrier-locked? →How to check that your phone is unlocked — and get it unlocked before you leave. When should I order my eSIM? →Up to 180 days before activation: order early, you won't lose a single day of your plan. I'm travelling with others or with 2 devices →One eSIM per phone, −5% from 2 and −10% from 3 — or use the hotspot to share.

Check whether your phone is compatible →

📲 Installation & activation

The QR code arrives by email within 2 minutes. Install it before you leave, on Wi-Fi, stress-free.

Do I keep my usual number? →Yes: your WhatsApp number, your contacts and your conversations are all kept automatically. Do I have to remove my physical SIM card? →No — it stays in place: the eSIM is added alongside it, as a dual SIM, in your settings. How do I make calls and send texts in Japan? →The eSIM handles data: your calls go through WhatsApp, iMessage or FaceTime, with your usual number.

Follow the step-by-step installation guide →

🇯🇵 In Japan

You've landed: tethering, tracking your data — and what to do if something goes wrong.

How do I share my connection (hotspot)? →Tethering is included with no limits on all our plans. How do I track my data usage? →Straight from your iPhone or Android settings, in a few seconds. My eSIM isn't working, what should I do? →Three simple checks: compatibility, restart, network settings.

See the 23 answers in the FAQ →

Human answer

Need a human answer?

Behind PlanJapan is a real team that knows Japan — not a bot. Message us on WhatsApp or by email, even on Sunday at 6am Tokyo time.

Can't find your answer?

Our support team replies within minutes on WhatsApp and by email — 7 days a week, weekends included.

💬 Contact us

All clear? Your Japan eSIM is waiting.

QR code by email in 2 minutes, NTT docomo 4G/5G network, Japan guide + Google Maps map included free.

Choose my plan →Satisfaction guaranteed · −5% from 2 eSIMs, −10% from 3