Billion Connect, travel eSIMBillion Connect promo code October 2026: 10% off at checkout
The Billion Connect promo code that works in October 2026 is ESIMRAT: it takes 10% off your order total at checkout.
How to use the Billion Connect promo code
Copy ESIMRAT
The “Copy code” button puts it on your clipboard.
Pick your Billion Connect plan
Destination, amount of data, validity.
Paste the code at checkout
In the promo code field: the total drops by 10%.
Where can I find a valid Billion Connect promo code?
On this page: ESIMRAT takes 10% off at Billion Connect, and it was last tested on Sep 18, 2026.
Every code listed on eSIMpromo shows the date of its latest test. A code without a dated test is not listed.
Why is my Billion Connect promo code not working?
- The code is ESIMRAT, in capital letters, with no space before or after it.
- If another code is already in the field, remove it before pasting ESIMRAT.
- The discount shows on the order total, on the checkout screen: that is where to look, not on the plan page.
- A code can be limited to a first order, or may not stack with a plan that is already on sale.
How we test the Billion Connect promo code
A real plan is added to the Billion Connect cart, the code ESIMRAT is entered at checkout, and the discount is read on the total to pay. The date of the latest test (Sep 18, 2026) is shown next to the code.
The full method is described on our About page. For prices and coverage, read our Billion Connect review.
Frequently asked questions: Billion Connect promo code
ESIMRAT. It takes 10% off the total, and it was last tested on Sep 18, 2026.
10% of the order total, whichever plan you choose.
At checkout, in the promo code field, before you confirm the order.
More eSIM promo codes
Great value for money, an eSIM that is simple to install with an app that is easy to use, and human customer support 24/7.
