Saily Code EDC10 applies a 10% discount to Saily travel eSIM plans, which means you pay 90% of the listed price for the plan you choose. Almost nobody buys a travel eSIM at a desk. It gets bought on a phone, often the night before a flight or in a departure lounge, which is exactly the situation in which a promo code field is easiest to miss. This article looks at the purchase from that angle: what changes when the screen is five inches wide, where the code field hides on mobile layouts, and the small handset-specific details that decide whether the discount actually lands.
Why the mobile path is the default one here
Saily is the travel eSIM product from Nord Security, the company behind NordVPN and NordPass, and it launched in 2023 selling prepaid data plans for travellers through a single app. The app is not an optional companion to a website account. Plan activation and management run through the app rather than a web dashboard, and reviewers treat that as a mild inconvenience compared with providers that let you do everything in a browser.
The practical consequence is that your phone is involved at some point no matter where you start the purchase. You can buy in a mobile browser, but you will still install the app to install the profile, monitor usage and top up. So the question is not whether to use mobile, only which mobile surface you enter the code on.
App or mobile browser: how the two differ
Saily sells through the app or the official website, and the code is entered in the promo or discount code field at checkout in either case. The difference is in the ergonomics rather than the offer.
In the app, checkout is a native screen. Fields tend to be laid out vertically, and the discount entry usually sits close to the order summary just above the payment step. Because the app is where activation happens anyway, buying here keeps the whole lifecycle in one place.
In a mobile browser, you get a responsive version of the desktop checkout. Elements that sit side by side on a laptop stack into a single column, which pushes the order summary — and the code link attached to it — further down the page than you might expect.
Either way, confirm the discounted total on screen before you pay. The reduced figure should be visible at that point, and on a phone that confirmation line is the only reliable proof the code registered.
If you have no strong preference, the app is the tidier route simply because you need it later regardless. If you started browsing plans in a mobile browser because a link took you there, there is no need to restart; just be more deliberate about finding the code field.
Where the code field actually lives on a small screen
On desktop, a discount box is often visible without any interaction. On phones, it is far more commonly collapsed to save vertical space. If the field is not immediately visible, look for a collapsed link labelled promo code, discount code or voucher near the order summary — that is where most checkouts hide it.
A few habits make it easier to find on mobile:
Scroll all the way to the order summary rather than stopping at the first payment button you see. On stacked mobile layouts the summary often sits below the payment method selector, not above it.
Look for a small chevron, plus sign or underlined text rather than a boxed input. Collapsed links are visually quiet by design.
Tap it and let the field expand fully before typing. On some layouts the keyboard opens and covers the field, so scroll again after the keyboard appears.
Enter EDC10 exactly as written, without spaces.
Tap apply, then let the page recalculate before continuing. Mobile checkouts sometimes take a beat longer than a desktop page to refresh the total.
The last step is where most mobile mistakes happen. It is easy to type the code and then immediately tap the payment button out of habit, before the total has updated. Wait for the number to change.
Mobile-only quirks worth knowing
Autocorrect and autocapitalisation
Phone keyboards are helpful in ways that work against promo codes. Autocapitalisation, autocorrect and predictive text can all alter a short alphanumeric string, and a trailing space inserted by the keyboard is invisible on a small screen. Type the code, then read back what is in the field character by character before applying it. If your keyboard keeps interfering, pasting the code is often cleaner than typing it.
Paste behaviour
Copying a code from a page or a message and pasting it into the field can bring a leading or trailing space with it. Some checkout fields strip that automatically and some do not. Delete and retype the last character if the code is rejected once — that single step resolves a surprising share of failed entries.
Payment sheets that jump the queue
Mobile checkouts often surface a one-tap wallet payment near the top of the page. Tapping it can carry you straight to authorisation before you have reached the summary where the code link sits. If you intend to use a discount code, apply it first and only then choose a payment method.
Session interruptions
Switching apps to check a flight time, taking a call, or letting the screen lock can reset a mobile browser checkout. If you come back to a blank total, re-check whether the code is still applied rather than assuming it survived.
The check to do before you open checkout at all
Confirm that your phone is eSIM-capable and carrier-unlocked, and do it before any money changes hands. An eSIM is a SIM profile installed as software rather than as a physical card, held on a small embedded chip that can carry several profiles at once. Most flagship phones from the last several years qualify, but a device locked to a carrier may refuse to install a third-party profile. A discount on a plan you cannot install is worth nothing.
There is a second, related mobile constraint. An eSIM profile is typically tied to the device it was installed on, and moving it to a different handset mid-trip is usually not possible. Buy and install on the phone you are actually travelling with, not on a tablet or an old spare that stays at home. If you browse plans on one device and buy on another, make sure the purchase and the install both happen on the travel phone.
Choosing the plan on a small screen
Saily sells local plans for a single country, regional plans covering a group of neighbouring countries, global plans spanning a hundred or more countries, unlimited options on some destinations subject to fair usage, and Saily Ultra, a subscription tier for frequent travellers that bundles a monthly data allowance with travel perks. Destination coverage is broad, with figures reported across review sites ranging from 150 to over 200 countries and destinations depending on how regions are counted.
The wider the coverage, the higher the cost per gigabyte. On a phone this matters more than usual, because comparison is harder: you cannot see several options side by side the way you can on a wide screen, so it is easy to tap the first plan presented. Scroll through the local, regional and global options against your actual itinerary before committing. Buying a global plan for a single-country trip is the most common way to overpay, and the gap between the right plan type and the wrong one is usually far wider than 10%.
The same logic applies to the allowance. A 10% reduction means paying 90% of the listed price, so a smaller allowance at 90% of its price beats a larger one you never use. Maps and messaging consume far less than video streaming, and on longer trips auto top-up can be configured in the app to add data when your balance falls to a low threshold, which removes the incentive to over-buy up front.
After payment: the mobile steps that follow
Install the eSIM profile while you still have reliable home internet, ahead of departure. Profile installation needs a working connection, and an airport network is not the place to discover otherwise. Activate the plan on arrival, then switch off data roaming on your home SIM so it cannot quietly take over — a genuinely mobile-specific trap, since your home profile stays active alongside the travel one and will happily pick up the data load if you let it.
Keeping the home SIM enabled is usually the right call anyway. Saily is data-only, with no phone number attached, so you cannot place or receive standard calls or SMS on it. If you depend on SMS one-time passcodes from a bank, that home profile needs to stay on. Tethering is supported on fixed data plans, which is worth knowing if your phone is also the connection for a laptop, and the Nord Security heritage shows in security features layered onto the connection, including ad and tracker blocking. If you already run a VPN or a content blocker on your phone, the overlap is substantial and should not be counted as a bonus.
The short version
Buying on a phone is the normal path for a Saily plan, and the discount survives that path perfectly well as long as you find the collapsed code link, type EDC10 cleanly past your keyboard's autocorrections, and wait for the total to recalculate before paying. Do the handset check first, choose the narrowest plan type your itinerary allows, then apply the code at the last step.
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.