Roamix promo code

The Roamix promo code that works in September 2026

One single code, and we added it to the cart on September 24, 2026: ESIMRAT takes 10% off your order. Roamix created it for eSIMrat readers as part of its partner program, valid across the entire site and without an expiration date.

The second code in the table is there for demonstration purposes: ROAMIX50, the kind of 50% code you find on aggregators, was rejected by the cart with the message "Coupon code not found". At the time of payment, only one code remains that works.

The code is entered after choosing your plan, never before: it is the data volume and duration that determine the price, and the discount is applied on top. And there is only one code per order: the field only accepts one at a time.

The Roamix promo code, tested in a real cart

We didn't copy code from another site. On September 24, 2026, we opened the Roamix Japan page, chose the 10 GB for 30 days plan displayed at $12.80, and went all the way to the cart, without an account and without paying anything.

In the summary, the "Promo code" button opens the field. Once the code is entered, click the "Apply" button, and the Promo (ESIMRAT) line appears with a −$1.28 discount. The total of $12.80, including taxes, drops to $11.52.

This test is what it is: a dated measurement. A provider can deactivate a code overnight without warning anyone. The date is displayed on this page so you know when the last check took place, and we redo it regularly.

What 10% earns on the Roamix grid

A percentage discount is proportional to the price. Here is what 10% represents on the Roamix Japanese pricing grid, the destination we use as a benchmark across the entire site.

At 10%, the discount remains modest on small plans and carries more weight on large ones: from $0.83 on the 5 GB plan to $4.04 on the 50 GB plan. Choosing the right plan remains the primary way to save, and our data usage calculator tells you how many gigabytes to plan for before the code even comes into play.

Roamix, what you're actually buying

Roamix is a travel eSIM brand published by Roamix Inc. Our catalog includes 202 countries and 42 multi-country plans, up to a global plan covering 127 countries. The operator is named on each plan: in Japan, NTT docomo, KDDI/au, SoftBank and Rakuten Mobile, in 4G and 5G.

Two plans are available. The volume-based plan ranges from 100 MB to 100 GB. The unlimited with daily quota plan provides 500 MB to 10 GB per day at high speed, followed by reduced speeds until the next day, for your choice of duration, from 1 to 365 days. Data sharing is included everywhere.

No apps to download: the QR code arrives via email less than a minute after payment, and the website's customer area displays your usage and allows you to top up. Support responds via email, advertised 24/7. An eSIM that has not been installed or activated is eligible for a refund within 14 days.

To put these plans in perspective with others, our Japan comparator ranks them by price per gigabyte, and our review of Roamix details the rest.

Fake Roamix promo codes and how to spot them

On the search query "Roamix promo code", some websites publish lists of 20% or 50% discount codes without ever showing a cart where they can be applied. These lists capture the click, and the only truly active code is often the one from the site publishing them.

A 50% discount valid across an entire catalog of eSIMs remains very unlikely: industry margins rarely allow for it. Beware of any promise of this level.

The solution can be summarized in one line: enter the code in your cart and watch the total. If it doesn't change, the code is dead, regardless of the promise displayed next to it. At Roamix, the test only takes a few seconds since the field opens before any registration.

Our eSIM promo codes page applies this rule to all compared providers.