eSIM Nagoya - Best Prepaid Data Plan

Japan eSIM Technical Specifications

Network Speed

4G LTE / 5G

Activation

Instant via QR Code

Why Irish Travellers Love the eSIM Japan

Japan eSIM FAQ for Irish Travellers

How do I install my Japan eSIM?

After purchase, you'll receive a QR code via email instantly. Scan it with your phone's camera, then go to Settings > Cellular > Add eSIM. Follow the prompts - it takes less than 5 minutes. See our installation guide for detailed instructions.

Is my phone compatible with eSIM?

Most modern smartphones support eSIM, including iPhone XS and newer, Google Pixel 3+, Samsung Galaxy S20+, and many others. Check our compatible devices list to verify.

Will I keep my Irish phone number?

Yes. Your iPhone or Android runs both SIMs at once , your Irish number stays active for calls and WhatsApp, while the eSIM handles all your data in Japan. The family group chat won't miss a beat.

How much data do I need in Japan?

For typical travel usage , Google Maps, WhatsApp, Instagram, and the odd video call home , 1-2GB per day is plenty. Light users (maps + messaging only) need about 500MB-1GB per day.

Roaming in Japan can cost €10-€15 per MB!

EU roaming is free for Irish carriers, but the second you leave Europe , the US, Asia, Australia , your carrier charges like it's 2005. Per-MB rates outside the EU can be shocking.

Data-heavy apps like Instagram, TikTok, or YouTube can consume hundreds of megabytes in minutes. Without an eSIM, your carrier's roaming fees could turn a simple social media session into a hundred-dollar expense.

Every year, travelers return home to unexpected bills of €200, €500, even €1,000 for just a few days abroad. Some carriers offer "travel passes" at €10-€15/day, but even those add up fast on longer trips.

With a prepaid eSIM data plan for Japan, you pay a flat rate upfront. No shock when you check your bill back home. Just affordable, fast data from the moment you land.

What network speeds will I get in Japan?

Our Japan eSIM connects to leading local operators providing 4G LTE and 5G coverage. Typical speeds are 20-100 Mbps download, enough for HD video streaming, video calls, and all apps.

Can I share data with my laptop or tablet?

Of course! Use your eSIM as a hotspot to share data with your laptop or tablet. Deadly for group trips and keeping the kids entertained.

What happens if I run out of data?

Simply purchase another eSIM - there are no overage charges. You can also buy your next plan before your current one expires to ensure uninterrupted connectivity.

When should I install my Japan eSIM?

We recommend installing your eSIM before you leave home while connected to WiFi. You can install it days in advance - the validity period only starts when you first connect to a network in Japan.

Is there free WiFi at Nagoya airport?

The airport near Nagoya offers free WiFi, but it's typically slow and time-limited. With an eSIM, you get instant 4G/5G internet upon landing , no registration, no time caps, and secure browsing throughout Nagoya.

Airport WiFi & Internet near Nagoya

Arriving in Nagoya? Skip the slow, unreliable airport WiFi. With an eSIM, you'll have fast 4G/5G data the moment you land , perfect for navigation, ride-hailing, and messaging.

Pro tip: install your eSIM at home before departure. It activates automatically when you land in Japan.

How to Install Your eSIM

Watch our quick guide to scanning and activating your eSIM QR code.