Saily Discount Code EDC10 applies a 10% discount to Saily travel eSIM plans, and because almost everyone buys a travel eSIM on the same phone that will use it, the whole purchase usually happens on a small screen. This guide covers that specific scenario: where the code field sits on mobile, how the app compares with the mobile website, and the handful of quirks that catch people out when buying data for a trip from a handset rather than a desktop.

Saily is the travel eSIM product from Nord Security, the company behind NordVPN and NordPass. It launched in 2023 and sells prepaid mobile data plans for travellers through a single app, covering a large number of destinations — figures reported across review sites range from 150 to over 200 depending on how regions are counted.

An eSIM is a SIM profile installed as software rather than as a physical card. Modern phones carry a small embedded chip that can hold several profiles at once, so your home SIM can stay active for calls and texts while a travel eSIM handles data. That means the device doing the buying is normally the device doing the installing, and the natural flow is to do everything on the phone in one sitting.

There is one check that has to come first, and it has nothing to do with the discount code: the handset must be eSIM-capable and carrier-unlocked. Most flagship phones from the last several years qualify, but a device locked to a carrier may refuse to install a third-party profile. Confirm this before you spend anything, because a code applied to a plan your phone cannot install has saved you nothing.

Both routes exist. You can download the Saily app or open the official website, and the code EDC10 goes into the promo or discount code field at checkout either way. The difference is what happens after payment.

Plan activation runs through the app rather than a web dashboard. Reviewers note this as a mild inconvenience compared with providers that allow full management through a browser, and on mobile it has a practical consequence: if you buy through the mobile site, you still need the app installed and working before the plan is any use to you. Buying in a browser does not spare you the download.

The app handles the entire lifecycle — browsing plans, purchase, installation, monitoring usage and topping up. Auto top-up is available and can be set to add data when your balance falls to a low threshold, which is useful on longer trips where running out mid-journey is genuinely disruptive. Those controls live in the app, so most people end up there regardless of where the transaction started.

If you have no strong preference, install the app first, apply the code there, and keep the whole purchase in one place. That avoids the situation where a receipt sits in a browser tab while the plan itself needs a separate login in an app you have not downloaded yet.

Mobile checkouts compress the order summary to save vertical space, and the promo code box is usually one of the first things to be folded away. If you cannot see anywhere to type EDC10, the field is almost certainly collapsed rather than absent. The usual places to look:

Enter the code exactly as written. On phones, the two things that quietly break a code are the keyboard's automatic capitalisation and its habit of inserting a trailing space after a word. Both can make a valid code look invalid. If the field rejects EDC10 on the first attempt, clear it completely, switch the keyboard to plain input if you can, and retype rather than paste.

Then confirm the arithmetic before paying. A 10% discount means the total you approve should be 90% of the pre-discount figure. On a compressed mobile summary it is easy to tap through without ever seeing the discounted line, so expand the breakdown and check that the reduction is actually shown.

An eSIM profile is typically tied to the device it was installed on. Moving it to a different handset mid-trip is usually not possible, so install it on the phone you are actually travelling with — not a spare, not a tablet you plan to leave at home. This is the mistake that is hardest to undo, and no amount of support contact fixes it cleanly once the profile is installed.

Install the profile while you still have reliable home internet, ahead of departure. Installation is a data operation, and doing it on arrival, on airport Wi-Fi, with a flight's worth of battery drain behind you, is the worst possible moment to discover a problem.

Once you land, activate the plan and confirm that your home SIM's data roaming is switched off. With two profiles live on one phone, the settings screen decides which one carries your data, and leaving the home profile enabled for data is how people end up paying a roaming tariff while a perfectly good travel plan sits unused alongside it.

Saily sells several plan shapes, and the choice you make on that small screen affects the bill far more than the discount does:

The pricing logic is consistent across the category: the wider the coverage, the higher the cost per gigabyte. Buying a global plan for a single-country trip is the most common way to overpay, and no discount code compensates for choosing the wrong plan type. Choosing a local plan over a global one for a single-country trip will save far more than 10% ever will.

Size the data allowance on realistic usage too. Maps and messaging use far less than video streaming, and the comparison screen on a phone shows fewer options at once, which nudges people towards the first plan that looks safe rather than the one that fits. Scroll the full list before committing.

Saily is a data-only service. There is no phone number attached, so you cannot make or receive standard calls or SMS on it. Most travellers keep the home SIM active for those and use the eSIM purely for data, with messaging apps covering the rest. If you rely on SMS one-time passcodes from a bank, keep the home profile enabled — that is a mobile-specific detail that only becomes obvious when a login fails abroad.

Unlimited plans are subject to fair usage, and speed throttling can apply after daily usage thresholds. That is standard across the eSIM industry, but it should temper expectations if you intend to tether heavily or stream. Unlimited in this market generally means unlimited at reduced speed after a threshold, not unlimited at full speed indefinitely.

Tethering itself is supported on fixed data plans, which is worth confirming for your specific plan because it is a common restriction elsewhere in the category. If you travel with a laptop or a second device, hotspot support is a large part of what makes a phone-installed eSIM useful.

Saily is a solid choice in a crowded category. The Nord Security backing is a reasonable proxy for the thing that actually matters with an eSIM reseller: that the company will still exist and still have working support when something goes wrong abroad. The app-centred design that makes browser management awkward is the same design that makes the phone-only workflow coherent.

The discount is modest in absolute terms, because travel eSIM plans are not expensive to begin with. Apply EDC10 — it costs nothing but a few taps in a collapsed checkout field — and then spend your real attention on the plan type, the data allowance and the handset you install it on. Those three decisions, all made on the same small screen, carry far more weight than the 10%.

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.