Japan Wireless vs Superalink

At a glance

Whole-catalog figures — every active plan each provider sells today.

Price check in popular destinations

The cheapest plan each provider sells for two realistic trip sizes, in the destinations both cover that travelers check most. Every price is a live plan you can buy.

Plan types on offer

Japan WirelessSuperalink

Unlimited data ✓ Yes ✓ Yes

Regional bundles No ✓ Yes

Global bundles (50+ countries) No No

Cruise / at-sea plans No No

Pay as you go No No

Comparison by eSIMKart

Policies compared

Confirmed from each provider's own site — see the trust card on each provider page for the verification date.

Japan Wireless Superalink

ID verification

Japan Wireless: Not required

Superalink: Not confirmed yet

Refund policy

Japan Wireless: eSIM orders can't be cancelled or refunded once dispatched (erroneous shipments excepted); pocket WiFi rentals cancel free before shipment.

Superalink: Refunds only if the eSIM has not been activated and no data has been used; QRIS purchases must be requested within 7 days of purchase.

Validity starts

Japan Wireless: Validity starts when the eSIM is actually activated, not at purchase, counted in 24-hour days; it must be activated within 30 days of purchase or it expires.

Superalink: Starts once the eSIM installs and connects to the local network at your destination — activation from home is possible, but Superalink recommends waiting until arrival; data isn't deducted until it connects there.

Fair-use limit

Japan Wireless: 4G Unlimited (DOCOMO) throttles to 256kbps after 3GB/day, resetting at midnight JST; 5G Unlimited (KDDI) has a general fair-use policy with no fixed daily cap stated.

Superalink: On Unlimited plans, speed drops for the rest of the day once the daily high-speed allowance is used (no extra charge, resets the next day): 10GB/day to 5 Mbps, 5GB/day to 1 Mbps, 500MB-3GB/day to up to 384 Kbps.

Top-ups & rollover

Japan Wireless: Existing eSIMs cannot be topped up; extra data requires purchasing a new/additional data plan, per Japan Wireless's own FAQ.

Superalink: Enter your eSIM's ICCID on Superalink's Top Up page (My Voucher) to add data or extend — no reinstall needed, though it only becomes available once the current package's validity ends or its data runs out.

Lost device / reinstalling

Japan Wireless: A Japan Wireless eSIM can only be installed once -- if you delete it from your device after installation you cannot reinstall it, and must contact Japan Wireless customer support for help.

Superalink: A deleted eSIM can be reactivated on the same device, but cannot be reissued for a different device, per Superalink's own FAQ.

Billing currency

Japan Wireless: Checkout lets you choose your billing currency (USD, EUR, GBP, AUD, CAD, JPY, KRW and more) via a currency selector.

Superalink: USD is the primary payment currency; other currencies may be accepted depending on availability and payment method, with the transaction currency set at the time of purchase.

Support

Japan Wireless: Live chat · Email · Phone · 7 days a week, support team based in Japan

Superalink: Live chat · Email · WhatsApp · Help center · 24/7

Payment

Japan Wireless: Card · PayPal · Apple Pay · Google Pay

Superalink: Card · PayPal

Headquarters

Japan Wireless: Tokyo, Japan

Superalink: Singapore

Legal entity

Japan Wireless: Inbound Platform Corporation

Superalink: Gadget SG Pte. Ltd.

Founded

Japan Wireless: 2015

Superalink: 2024

Comparison by eSIMKart

Discount codes

Japan Wireless -15% ESIMKART15

Superalink -20%(Unlimited plans only) ESIMK0000

Japan Wireless vs Superalink — common questions

Figures on this page come from both providers' live catalogs and are re-checked automatically every day.

Compare Japan Wireless and Superalink by destination

Head-to-head prices for the destinations travelers check most.