eSIM or physical SIM for travelling?
For a trip of days or weeks, the eSIM wins almost every time: you buy it from home, there's no queue or counter on arrival and your Spanish number stays in place. The local physical SIM still makes sense for long stays, when you need a number in the country, or when your phone doesn't support eSIM, which is the one reason with no way around it.
Updated on
The counter is past security, has eight people in front of it and closes at ten. Your flight has landed late. That scene is, in practice, the whole difference between the two options.
What really changes
| Local physical SIM | Travel eSIM | |
|---|---|---|
| Where you buy it | At the destination: airport, shop, kiosk | From home, before you leave |
| Hassle on arrival | A queue, sometimes passport and registration | None |
| Your Spanish number | Comes out of the phone | Stays in, as a second line |
| Risk | Losing the SIM you took out | None: there's nothing physical |
| Local number | Yes, with calls and SMS | No: travel plans are data only |
| When it starts counting | When you activate it there | On first connecting at the destination |
The detail most people underestimate is the SIM you take out. That little card ends up in a wash-bag pocket, and that's where it gets lost. Coming home without your SIM means going without your number until your operator sends you another.
When the physical SIM makes sense
- Your phone doesn't support eSIM. There's no arguing with this one: if it doesn't, that's the end of it.
- You're going for months. For long stays, a local contract tariff usually works out better than any travel plan.
- You need a local number to receive SMS from a bank, a government office or a rental.
- You're going somewhere with no local-operator agreement for eSIM, and those places are fewer all the time.
When the eSIM makes sense
- Trips of days or weeks, which is most of them.
- You're arriving at night, delayed, or at an airport where you don't want to hunt for anything.
- You want to keep getting calls and WhatsApp on your number while you're away.
- You're visiting several countries and would rather not swap cards at every border.
Is a local SIM bought there cheaper?
It depends on the country and how long. For long stays a local tariff usually works out better; on one or two-week trips almost never, because airport tourist SIMs sell at airport prices.
Can I have both at once?
Yes, if your phone supports eSIM: the physical SIM in the tray and the eSIM downloaded, choosing which one carries the data. It's exactly what most people do when they travel: calls on the Spanish one, data on the destination one.
Is the coverage different?
No. Both connect to the same masts of the same local operator. Coverage depends on the country and the area, not on the card's format.
What if my phone is locked to an operator?
Then it won't take another operator's SIM or anyone else's eSIM. You have to ask your operator to unlock it before travelling; it's usually free if your contract is up to date.
Something off, or a price changed? Write to ayuda@zasesim.com and we'll fix it. Data when you land.