Sim Local Discount Code ESIMDISCOUNT10 is a checkout string that takes 10% off your order total at Sim Local, the Dublin-based travel SIM and eSIM retailer. It is a flat percentage rather than a fixed cash amount, so the money you save scales with the size of the plan you buy: 10% off means you pay 90% of the listed price, whatever that price happens to be.
What "discount code" means at this store
In everyday use, the words voucher, coupon and discount code carry slightly different associations. A voucher usually suggests stored value — something worth a set amount that you spend down. A coupon suggests a one-off, paper-style offer clipped or printed and handed over. A discount code suggests a string of characters typed into a box during an online order.
At Sim Local, all three descriptions point at the same single mechanism, and it is the third one. ESIMDISCOUNT10 is a string you enter while checking out online. There is no balance attached to it, nothing to print, and nothing to redeem in person. If you have seen the phrase written up as a Sim Local voucher or a Sim Local coupon elsewhere, it is the same code doing the same job: reducing the order total by 10% at the point of payment.
That distinction matters more here than at most retailers, because Sim Local is not purely an online business.
Who Sim Local is
Sim Local was founded in 2011 by the Irish entrepreneur Killian Whelan. It is headquartered in Dublin with an office in London, and describes itself as "the global leader in Travel SIM card and eSIM Retail" — that is the company's own claim rather than an independent assessment. Its main site is at simlocal.com, with an eSIM sub-site at esim.simlocal.com run by the same company. It publishes apps for both iOS and Android.
What sets it apart from the crowd of app-only eSIM brands is that it is a physical retailer too. Sim Local sells travel SIMs and eSIMs through airport stores, staffed kiosks and vending machines as well as through its website and app. Airport locations named on its own site include Dublin, London Heathrow, London Gatwick, Brussels, Athens, Madrid and Copenhagen, alongside US airport partnerships, and it has held an exclusive UK airport distribution partnership with WHSmith Travel since 2017.
On scale, the company says it has connected millions of customers since 2011. A third-party company profile puts it at roughly 73 employees across three continents as of February 2026 and around 4 million customers since 2011.
According to its about page, the plans it retails come from operators including EE, Orange, Lycamobile, Three, AU (Japan), True, Digicel and Mobifone. So you are buying network access through a retailer rather than from a single carrier.
The one limitation worth knowing first
Because the code is a checkout string, it only works where there is a checkout. An airport kiosk or a vending machine has no field to type it into, so ESIMDISCOUNT10 will do nothing for you standing in a terminal. If you first met the brand at an airport shop and want the 10% off, you need to buy on the website or in the app instead.
That is a practical planning point as much as a technical one. Buying online in advance also means you are not depending on store opening hours or stock, and an eSIM activates within minutes via the app or emailed instructions with no physical SIM swap, so there is little reason to leave it until you land.
How to apply the code
The exact position of the discount field varies between online stores and can change with a redesign, so treat the following as the general shape of the process rather than a map of specific buttons.
Choose your destination and plan on the website or in the app, and add it to your basket.
Go through to the checkout and look for a field labelled something like discount code, promo code, voucher or coupon. It is usually near the order summary, sometimes hidden behind a small link you have to expand.
Enter ESIMDISCOUNT10 exactly as written, in capitals and with no spaces, then apply it.
Check that the order total has dropped and that the line showing the reduction appears in the summary before you pay.
Only then complete payment. A code applied after payment cannot be backdated by you, and chasing it afterwards means relying on support.
If the field is not visible on the first checkout screen, it sometimes appears only after you have entered an email address or chosen a payment method. Work through to the final review step before concluding the field does not exist.
What 10% is worth in practice
On the research date, the global eSIM page listed six plans in US dollars. Applying a flat 10% to each gives a clear picture of what the code does at different order sizes:
100GB, 116 countries, 31 days — $93.50 becomes $84.15, a saving of $9.35
50GB, 117 countries, 31 days — $70.25 becomes $63.23, a saving of just over $7
30GB, 71 countries, 30 days — $47.00 becomes $42.30, a saving of $4.70
20GB, 72 countries, 31 days — $35.00 becomes $31.50, a saving of $3.50
12GB, 71 countries, 30 days — $20.00 becomes $18.00, a saving of $2.00
3GB, 109 countries, 31 days — $10.50 becomes $9.45, a saving of $1.05
Those are the global plans as listed on the research date, and they are the only prices quoted here. The pattern is straightforward: on a small data bundle the code shaves off around a coffee's worth, while on the largest global plan it is closer to ten dollars. Nothing about a percentage code rewards you for buying more than you need, though — 10% off a plan that is twice the size you will use is still a worse outcome than paying full price for the right one.
Read the coverage counts, not just the data amount
One quirk in that price list is genuinely useful. The country count does not rise with the data allowance. The 3GB plan lists 109 countries, while the 30GB and 12GB plans list 71 and the 20GB lists 72. The 50GB plan lists 117, one more than the 100GB plan's 116. So a bigger bundle is not automatically a wider one, and the cheapest plan on the page covers more countries than several dearer ones.
If your trip crosses several borders, check the destination list attached to the specific plan rather than assuming the expensive option covers everything. Overall, the company advertises more than 150 countries and regions, and its about page refers to plans from over 100 countries; those are its own figures.
Other details worth reading on the plan page before you apply the code: some plans include calls and SMS while others are data-only, with calls and texts described as available in popular destinations. The company also advertises up to 10GB of full-speed data daily without throttling, contrasting itself with providers that slow down after smaller daily amounts — again, its own claim, and not a claim of unlimited data. Network generation is 4G, 5G or 3G depending on the plan and the local network.
Refunds and the questions the code does not answer
Sim Local advertises a "No Quibble Refunds" guarantee, described on its site as getting your money back if you change your mind. That is a meaningful policy for a product you often buy before a trip that might shift. The conditions attached to it are set out on the policy page, so read that page rather than assuming what they are.
Several things about ESIMDISCOUNT10 itself are simply not published. It is not stated whether the code applies to every plan — local and regional as well as global — or to physical SIMs bought online, whether it works in the app as well as on the website, or whether any minimum spend, expiry, first-order condition or per-customer limit applies. The honest approach is to treat the checkout as the arbiter: enter the code, and let the order summary tell you whether it applied to what is in your basket.
Who it suits, and the verdict
The code suits anyone who was going to buy from Sim Local online anyway. It is most useful to travellers who prefer a retailer with a real-world presence and a stated refund guarantee over a purely virtual brand, and who are buying a larger plan where 10% is a noticeable sum. It suits multi-country trips reasonably well, given the breadth of destination lists, provided you check the counts plan by plan.
It suits airport walk-in buyers least, because the mechanism cannot reach them. And it should not be the reason you choose one plan over another: pick the size and coverage that match your trip first, then apply the code to whatever that turns out to cost.
The verdict is that ESIMDISCOUNT10 is a modest, predictable saving on a product most travellers buy once per trip. A flat 10% is easy to verify yourself — the total should fall to nine-tenths of the listed price — and that transparency is the main thing to like about it. Check the reduction on screen before you pay, and read the plan and refund pages with the same attention you give the price.
Promotional terms, eligibility and values are set by the provider and can change at any time. Always confirm the current terms on the official site before signing up or completing a purchase.