Saily eSIM (by Nord Security): how it works and who it suits
Key facts
- Saily, by Nord Security, is an app-first travel eSIM sold in gigabyte packages with a validity window.
- GB plans win on short, low-usage trips; unlimited wins when you navigate, stream or work on the road.
- VoaSim charges one price per duration for all 170 destinations: USD 18.90 for 5 days up to USD 106.90 for 60 days (USD 1.78/day).
- VoaSim data is truly unlimited — no cap, no throttling, no hidden fair-use clause — and payment is in USD via Stripe with an emailed invoice.
- No island Caribbean coverage and no service at sea on cruises; Puerto Rico works on US networks.
See the exact price for your dates
Saily is the travel eSIM brand built by Nord Security, the company behind NordVPN. Like most app-first eSIM sellers, it works on a data-package model: you pick a destination, pick an amount of data, pick how many days it stays valid, and install a QR code or activate straight from the app.
This page is a model comparison, not a lab test or a speed benchmark. We describe how the GB-based model behaves on a trip, when it is the smarter buy, and how it differs from VoaSim's unlimited approach. For exact Saily plans and current pricing, always check Saily's official site or app.
How the Saily eSIM model works
Saily follows the standard app-based eSIM formula used by brands like Airalo, Nomad and Ubigi. The flow looks like this:
- You choose a destination or a regional/global bundle.
- You choose a data allowance in gigabytes and a validity window in days.
- You pay in the app and install the eSIM profile on your phone.
- The eSIM connects to partner networks at the destination; your physical SIM keeps your number.
It is data-only, like almost every travel eSIM, including VoaSim. You keep WhatsApp, iMessage, maps and app calls over data, but you do not get a local phone number for traditional voice calls.
Two details matter more than the headline price on any GB plan: when the validity clock starts, and what happens when the gigabytes run out. Read those two lines in the terms before you buy, and confirm tethering rules there too — they vary by brand and by plan.
Who Saily is a good fit for
Be fair to the model: buying by the gigabyte is genuinely cheaper for some travelers. Saily or any GB-based eSIM is likely the better pick if:
- You are on a short city break and mostly use hotel and café Wi-Fi.
- Your usage is predictable: maps, messaging, a few searches, no video.
- You already trust the Nord Security ecosystem and want everything in one app.
- You want the smallest possible upfront spend and are fine topping up mid-trip.
Where the model gets uncomfortable is on long trips, remote work, heavy navigation, video calls with family, or when you are the person sharing content from the road. Then you spend the trip watching a counter. If you have ever run out of data in a taxi queue, a flat unlimited plan removes that whole category of stress.
How VoaSim compares
VoaSim sells the opposite product: truly unlimited data — no cap, no throttling, no hidden fair-use clause — at one price per duration, identical for every destination among 170 destinations on every continent. You do not compare GB tiers; you pick how many days you travel.
| Duration | Price | Per day |
|---|---|---|
| 5 days | USD 18.90 | USD 3.78 |
| 7 days | USD 23.90 | USD 3.41 |
| 10 days | USD 30.90 | USD 3.09 |
| 15 days | USD 42.90 | USD 2.86 |
| 30 days | USD 61.90 | USD 2.06 |
| 60 days | USD 106.90 | USD 1.78 |
Prices already include today's 15% promo. Trips of 1-4 days pay the 5-day package; a second eSIM in the same order gets 10% extra off; the maximum is 90 days per eSIM. Run your dates in the price simulator to see the exact total.
Side-by-side checklist before you buy
Use this as a buying checklist rather than a scoreboard. Confirm each line for any brand on its official terms page.
| Question | GB-based eSIM (Saily model) | VoaSim |
|---|---|---|
| Data model | Packages by GB with a validity window | Truly unlimited, no cap or throttling |
| Pricing logic | Varies by country and GB tier | Same price per duration everywhere |
| Purchase channel | Mostly the brand's app | Website, QR code by email in minutes |
| Payment | Check the app | Card in USD via Stripe, no hidden fees, emailed invoice |
| Running out mid-trip | Top up in the app | Not possible — nothing to run out of |
| Support | Check the brand's channels | Human support, chat and hola@voasim.com |
| If it will not connect | Check the refund policy | 100% refund if support cannot fix it |
More angles in our comparison hub.
Coverage, Europe and the gaps to know
VoaSim covers 170 destinations, including Brazil, connecting automatically to local networks on 4G and, where available, 5G. The Europe plan is one eSIM for 50 countries, Switzerland, the UK, Turkey, Norway and Iceland included — useful if your trip crosses borders and you would otherwise juggle several regional packages.
Two honest gaps. First, the island Caribbean is not covered right now: Dominican Republic, Cuba, Jamaica, Bahamas, Aruba, Curaçao and neighbors. Puerto Rico does work, because it runs on US networks. Second, cruises: the eSIM works on land, at ports, never at sea. If your trip is one of those, another provider or your carrier's roaming plan is the better call, and we would rather say so now than after you pay.
Installation, activation and rescue
Your phone needs eSIM support: iPhone XR or newer, Samsung Galaxy S20 or newer, Google Pixel 3 or newer, and most phones launched from 2020 on. Universal check: dial *#06# — if an EID appears, you are fine. Carrier-locked phones must be unlocked first. VoaSim does not sell physical SIM cards.
The QR code arrives by email within minutes of payment, with a step-by-step guide for iPhone and Android in our guides. Install at home, before you fly, but keep the eSIM line switched off until you land — on Android, do not turn on the eSIM's data before the trip. Validity counts from the first connection at the destination, not from purchase.
Your physical SIM stays active, so WhatsApp keeps running on your usual number. Just disable data roaming on your home carrier. If any eSIM, from any brand, refuses to get signal, our free eSIM Rescue tool walks through the diagnosis.
Why trust VoaSim?
Registered company with an invoice on every purchase, USD payment via Stripe with no hidden fees, human support and a guarantee: if the eSIM will not connect and support cannot fix it, you get 100% back.