Japan Wireless vs Yesim

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 WirelessYesim

Unlimited data ✓ Yes ✓ Yes

Regional bundles No ✓ Yes

Global bundles (50+ countries) No ✓ Yes

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 Yesim

ID verification

Japan Wireless: Not required

Yesim: 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.

Yesim: Refunds within 30 days of purchase only if the plan/top-up hasn't been activated, used or expired (installing the eSIM profile counts as activation); approved refunds go to the original payment method, but amounts of €10 or less are credited as Ycoins.

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.

Yesim: You select a desired activation time when purchasing a plan in the app -- validity is not automatically triggered at purchase.

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.

Yesim: Yesim itself does not enforce a Fair Usage Policy on its Unlimited plans, but some of its partner network providers may apply their own FUP as part of their own terms, per Yesim's Help Center.

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.

Yesim: Additional data can be bought at any time from the Yesim app or website, added to the same eSIM.

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.

Yesim: Yesim eSIM profiles use a one-time activation code -- don't remove the profile or rescan the QR code, as that can wipe your settings; if lost or it fails to install, contact Yesim support for a new QR code.

Billing currency

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

Yesim: Based on the pre-selected currency on the account. Yesim accepts EUR, AUD, CAD, PLN, GBP, USD

Support

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

Yesim: Live chat · Email · Help center · 24/7

Payment

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

Yesim: Card · PayPal · Apple Pay · Google Pay · Crypto

Headquarters

Japan Wireless: Tokyo, Japan

Yesim: Baar, Switzerland

Legal entity

Japan Wireless: Inbound Platform Corporation

Yesim: GENESIS GROUP AG (Switzerland)

Founded

Japan Wireless: 2015

Yesim: 2019

Comparison by eSIMKart

Discount codes

Japan Wireless -15% ESIMKART15

Yesim -20% ESIMKART20

Japan Wireless vs Yesim — common questions

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

Compare Japan Wireless and Yesim by destination

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