Fixed Data – 5GB, 10GB & 30GB Options for Travelers

When comparing Japan eSIM plans, four variables matter most: total data volume, speed, daily reset structure, and price relative to trip length. Fixed Data plans give a set total for the entire trip; the 5G Unlimited Max plan removes the cap and throttling entirely. ESIMJAPAN.com lists all four plan types side by side, making it straightforward to match the right plan to your trip length and usage habits.

Yes — all plans on ESIMJAPAN.com are fully prepaid with no recurring charges, no subscription fees, and no overage bills under any circumstances. The price shown at checkout is the total amount you will pay, with no hidden fees for SIM delivery, network access, or support. When your plan’s data or validity period is exhausted, the connection simply stops. You will never receive an unexpected charge.

No — there is nothing to return when your ESIMJAPAN.com plan expires. Unlike pocket WiFi rentals, which require returning a physical device to an airport counter, an eSIM is entirely digital and simply becomes inactive when the plan ends. The dormant eSIM profile can remain on your device indefinitely at no cost, or you can delete it through your phone’s cellular settings at any time.

For a moderate traveler, 10GB over 10 days — approximately 1GB per day — is generally sufficient for maps, messaging, social media browsing, and occasional web searches in Japan. 10GB may fall short if you stream music continuously on transit (approximately 150MB per hour), watch YouTube on Shinkansen rides (approximately 250MB per hour at 480p), make video calls, or use your phone as a hotspot. For itineraries with heavy transit or streaming, the 5G Unlimited Max plan from ESIMJAPAN.com is the safer choice.

For most travelers, 20GB is sufficient for a two-week trip in Japan, averaging approximately 1.4GB per day — enough for maps, messaging, social media, and light streaming. The scenarios most likely to exceed this allowance are frequent HD video streaming on transit, multiple hours of video calling per day, large file uploads to cloud storage, or regular hotspot use for a laptop. For two-week trips with unpredictable usage patterns, the 5G Unlimited Max plan from ESIMJAPAN.com removes the need to monitor consumption entirely.

For 1–4 days, a Fixed Data plan (3GB or 5GB) offers full-speed data at the lowest price. For 5–7 days, a Fixed Data plan (10GB) or Unlimited Data plan suits most moderate users. For 7–14 days, the Unlimited Data plan removes the need to monitor usage at a competitive per-day rate. For 7+ days with heavy use or remote work, the 5G Unlimited Max plan delivers full 5G speeds with no cap or throttling throughout the trip. All plan types are available side by side on ESIMJAPAN.com.

On ESIMJAPAN.com Fixed Data plans, unused data does not roll over — any remaining data expires with the plan at the end of the validity period, which is why selecting the right volume for your trip length matters. On the Unlimited Data plan, each day begins with a fresh high-speed allocation regardless of how much was used the previous day, so conservative days do not build a reserve. On the 5G Unlimited Max plan, rollover is irrelevant as there is no data cap to exhaust.

Yes, eSIM Japan Fixed Data plans work everywhere in Japan. We select and offer the best data plans which provide the best nationwide coverage.

You can purchase an eSIM at your convenience, either one day before your travel date or upon arrival at your destination.
Additionally, please note that to install the eSIM, your device must be connected to a Wi-Fi or a cellular data network.

You cannot make phone calls or use SMS with this eSIM plan.
eSIM Japan Fixed Data plans are data-only and do not include a local mobile number.

Yes, the top-up option is available. You can find the ‘Make a Top-up’ button in the email that contains your QR code to extend your eSIM.

Please be aware that as this eSIM plan provides a Hong Kong IP address, you may encounter issues accessing services such as TikTok or other restricted services in Hong Kong.

1. Check the ICCID and install each eSIM separately.
Each eSIM can only be installed once and on one device.
Please use the ICCID to distinguish each eSIM and install them on different devices.
You can find the ICCID and Order Number on your QR code voucher.

2. Make sure you’re installing on the correct device.
After an eSIM is installed on a device, it cannot be moved to another device.
Please double-check the intended device before installation.

3. One ICCID per device.
Do not scan the same ICCID on two devices.
Each eSIM must be installed on a separate device.

4. Do not delete the eSIM.
Once deleted, the eSIM cannot be reinstalled.
If you are experiencing an issue, please contact customer support before removing it.

Our QR code is sent automatically to the email address you’ve written in the order form within 15 minutes. If you haven’t received your email, please check the following below :

1. Please check your promotion or spam folder first.
2. You may have a typo in the email address you provided to us. In this case, please contact us at [email protected], so we can resend it to you as soon as possible.
3. Please check the email associated with your payment method, as the QR code will be sent to that address.

You can contact our Team anytime at [email protected] or on WhatsApp.