Saily Promo Code EDC10 takes 10% off a Saily travel eSIM plan, meaning you pay 90% of the listed price once the code registers at checkout. If you have never bought an eSIM before, that is the simplest part of the process. The rest of this guide walks through everything that comes before and after: checking your handset, getting the app, understanding what you are actually buying, entering the code, and installing the profile so that it works when you land.

Before you create an account or think about a discount, confirm two things about your phone. It must be eSIM-capable, and it must be carrier-unlocked. An eSIM is a SIM profile installed as software rather than as a plastic card, and the embedded chip that holds it is present in most flagship handsets from the last several years. Carrier locking is the trap. A device still locked to a network may simply refuse to install a third-party profile, and at that point the plan you bought — discounted or not — is worth nothing to you.

This check costs nothing. If you are unsure, your phone's settings will usually tell you whether it supports adding a mobile plan digitally, and your existing carrier can confirm the lock status. Doing this first is the single most useful habit a first-time eSIM buyer can adopt, because every other step depends on it.

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 through a single app, covering a large number of countries and destinations — published figures range from 150 to more than 200 depending on how regions are grouped and counted.

The mechanics underneath are the same as for every other eSIM reseller. Saily buys capacity from local mobile network operators in each destination and resells it to you as a plan. There is no proprietary network involved, which means the things worth judging are app quality, plan structure, support and price. A first-time user should read that as reassurance rather than a warning: you are not signing up to an experiment, you are buying local data through a tidier interface than a roaming bill.

The reason travellers bother at all is that a modern handset can hold several SIM profiles at once. Your home SIM stays active for calls and texts while the travel profile carries data. You keep your number, you keep receiving incoming calls, and you never open a SIM tray in an airport with a paperclip.

Setup happens through the Saily app, or you can start on the official website. Plan activation and management run through the app rather than a web dashboard, so the app needs to be installed and working — reviewers note this as a mild inconvenience next to providers that allow full management in a browser. For a first-time user the practical consequence is small but worth planning for: do the download and the sign-up at home, on a connection you trust, not in a departure lounge.

Once you are in, the app handles the whole lifecycle. You browse plans, buy, install, watch your usage and top up from the same place. Auto top-up is available and can be set to add data when your balance drops to a low threshold. On a long trip that is genuinely useful, because running dry tends to happen at exactly the moment you need a map or a booking reference.

This is where new users lose more money than any discount can recover. Saily sells several shapes of plan, and the 10% reduction applies to each in the same way — it scales with the price, so a larger purchase produces a larger absolute saving. The categories are:

The pricing logic across the category is consistent: the wider the coverage, the higher the cost per gigabyte. Buying a global plan for a single-country trip is the most common way travellers overpay, and a 10% reduction does not begin to compensate for that. Match the plan to the itinerary you actually have, then apply the code to whatever you land on.

Data allowance deserves the same honesty. Maps and messaging consume far less than video streaming. A first-time buyer guessing high is not wasting much, given auto top-up exists, but there is no reason to buy for usage you will not have.

Two checkout habits carry over from any other online purchase. Type the code rather than pasting it, because a pasted value often carries a trailing space that some forms reject outright. And treat the code field's own confirmation message as separate from the order total — if the field accepts the entry but the total has not moved, something has not registered, and reloading before paying is cheaper than chasing it afterwards.

Verifying the discount is easy here because it is a flat percentage rather than a bundle, a trial or a credit. The total before payment should be visibly lower than the total you saw before typing the code, and it should be 90% of the original figure.

Saily is data-only. There is no phone number attached, so standard calls and SMS are not part of it. Most travellers solve this by leaving the home SIM active for voice and texts and letting messaging apps do the rest. The case to plan for is SMS one-time passcodes from a bank: if you rely on those, your home profile has to stay enabled.

Tethering is supported on fixed data plans. Confirm it for the specific plan you buy, because hotspot restrictions are common elsewhere in this market. If you travel with a laptop or a second device, treat tethering as a requirement rather than a bonus.

Unlimited plans are subject to fair usage, and speed throttling can apply after daily usage thresholds. That is industry standard, but it should shape expectations: unlimited generally means unlimited at reduced speed after a threshold, not unlimited at full speed indefinitely. Heavy streaming or tethering is where you notice.

Finally, an eSIM profile is typically tied to the device it was installed on. Moving it to another handset mid-trip is usually not possible, so install it on the phone you are travelling with, not on whichever device is nearest when the confirmation email arrives.

The saving is modest in absolute terms, because travel eSIM plans are not expensive to begin with. There is no reason not to apply it, and it suits larger or longer purchases slightly better than the smallest ones purely because 10% of a bigger number is a bigger number. The Nord Security backing is a reasonable proxy for the thing that matters most with a reseller: that the company still exists, with working support, when something goes wrong somewhere you do not speak the language.

For a first-time user, though, the order of priorities is clear. Confirm the handset is unlocked and eSIM-capable, pick the narrowest plan that covers your route, set a realistic data allowance, install before you fly — then add the code. Choosing a local plan over a global one for a single-country trip will save considerably more than 10% ever can.

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.