Saily Discount Code EDC10 applies a 10% discount to Saily travel eSIM plans, which means you pay 90% of the listed price for the data plan you choose. If you have never bought an eSIM before, the code itself is the easy part — the fiddly bits are checking your handset, picking the right plan type and installing the profile at the right moment. This guide walks through the whole sequence in the order a first-time user actually meets it.

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, which is why a travel eSIM can sit alongside your existing home SIM instead of replacing it. That only works if two conditions are met: the handset must be eSIM-capable, and it must be carrier-unlocked.

Most flagship phones from the last several years are eSIM-capable, but a device still locked to a carrier may simply refuse to install a third-party profile. Check both things before you spend anything. A discount on a plan you cannot install is worth nothing, and this is the single most common way a first-time eSIM purchase goes wrong.

One more device detail matters early: an eSIM profile is typically tied to the handset it was installed on. Moving it to a different phone partway through a trip is usually not possible. Install it on the phone you are genuinely travelling with, not on a spare you might leave at home.

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. Coverage spans a large number of countries and destinations — figures reported across review sites range from 150 to over 200, depending on how regions are counted.

Like every eSIM reseller, the underlying service is capacity bought from local mobile network operators in each destination. What a reseller adds is packaging: one app, one payment, one installation flow, and in Saily's case privacy-oriented features layered on top of the connection. For a first-time buyer, the practical value of the Nord Security backing is simply that the company is established rather than a short-lived reseller, which matters when you need working support from abroad.

Saily's app handles the entire lifecycle: browsing plans, purchase, installation, monitoring usage and topping up. That makes it the natural starting point rather than an afterthought. Download the app or open the official website, and create your account there.

A few general habits are worth adopting at this stage, whatever provider you are signing up with:

Note that plan activation runs through the app rather than a web dashboard. Reviewers flag this as a mild inconvenience compared with providers that allow full management in a browser. For a first-time user, the practical consequence is that the app needs to be installed and working on the travelling phone before you leave.

This is where new users lose or save real money, and it dwarfs the value of any code. Saily offers several plan shapes:

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. Match the plan to the actual itinerary you have booked, not to the trip you might take one day.

Then size the data allowance realistically. Maps and messaging use far less than video streaming. If you are unsure, remember that the app supports top-ups, and auto top-up can be configured to add data when your balance falls to a low threshold — useful on longer trips where running out mid-journey is genuinely disruptive. That safety net means you do not need to over-buy on the first purchase.

Once the plan is chosen, the code step is short. Promo code fields at checkout usually sit near the payment summary, sometimes collapsed behind a link labelled promo code, discount or voucher. Type the code exactly as written, with no trailing space, and let the page recalculate before you confirm.

The arithmetic is simple: 10% off means the total you pay is 90% of the pre-discount figure. If the discount has applied, the summary line should change before payment, not after. If nothing changes, stop and re-check the field rather than paying and hoping it is applied later.

Install the eSIM profile while you still have reliable home internet, ahead of departure. This is the step first-time users most often postpone, and it is the worst one to leave until you have landed in an unfamiliar airport with no connection.

On arrival, activate the plan through the app and confirm that your home SIM's data roaming is switched off. The dual-profile capability is the real benefit here: you keep your home number live for calls and texts while the travel eSIM handles data, so nothing routes through your home carrier's roaming tariff by accident. If both are left enabled for data, you can end up paying twice.

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 rely on messaging apps for the rest. If your bank sends SMS one-time passcodes, keeping the home profile enabled is not optional.

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: unlimited in this market generally means unlimited at reduced speed after a threshold, not unlimited at full speed indefinitely.

On the positive side, tethering is supported on fixed data plans, which is worth confirming for the specific plan you buy because hotspot restrictions are common elsewhere in the category. If you travel with a laptop or a second device, that support matters more than a few percent off the price.

Ten percent is a modest saving on what are already low-value individual purchases, because travel eSIM plans are not expensive to begin with. Apply it — there is no reason not to — but treat it as the last step rather than the reason for the purchase. Choosing a local plan over a global one for a single-country trip will save far more than 10% ever will, and confirming your handset is unlocked and eSIM-capable before you spend anything protects the whole amount rather than a tenth of it.

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.