If you are a new expat in Spain, or in the process of moving here, you’re probably wondering how to make sure your mobile phone works here and that you’ll have enough mobile data to get by. So you’re likely to be looking at a pay-as-you-go SIM in Spain. You can check out my earlier post in which I compared mobile phone contracts with prepaid SIM cards in Spain; the latter option offers several advantages to expats living in Spain.
What is a PAYG SIM in Spain?
A pay-as-you-go SIM (also called a prepaid SIM) is a SIM card for your mobile phone by which you pay for calls, texts, and data before you use them, rather than being billed at the end of the month (which is how it works if you have a contract, or post-paid, plan).
You add credit or buy a data/call/text bundle (often called a “top-up” or “recharge”) through an app, website, retail store, or self-service kiosks. Once your credit runs out, you can’t make calls, send texts, or use data until you top up again (some providers allow small overages or restrict only certain functions).
No contract, no “permanencia”: pause whenever you like
A pay-as-you-go SIM in Spain doesn’t come with a contract, so you’re not locked into a monthly agreement or long-term commitment. This leaves you free to switch providers, change plans, or pause the service at any time without paying a penalty.
The SIM-only option offers flexibility for customers who want local data/calls without an international roaming plan, and for short-term stays or work trips. It is also a good option if you need a secondary mobile (a back-up or business phone) and for anyone without the documentation or credit history required for a mobile phone contract.
No NIE required, no credit check, no Spanish bank account
Since you’re paying upfront, providers don’t perform credit checks. This makes pay-as-you-go SIMs accessible to students, young users or anyone with a limited credit history, and there’s no need for a Spanish bank account or a fixed address.
Expats living in Spain need to apply for a NIE (“Número de Identificación de Extranjero”, or Spanish ID number for non-nationals), which can be a complex process. Nevertheless, don’t worry if you haven’t yet got your NIE; luckily, some companies, like Lobster, understand that requiring a NIE can be a problem for new arrivals, so they allow you to purchase a SIM with your passport or EU ID.
What you need to buy a prepaid SIM in Spain
Buying a prepaid/pay-as-you-go SIM in Spain is straightforward, but Spanish law requires that every SIM be registered with a valid photo ID; in other words, an official, government-issued document with your photo, name and (usually) date of birth that hasn’t expired. A valid passport does the job whether you have residency or not; if you already have your TIE card, that works too. Mobile provider staff register your ID at the point of sale before your SIM is activated. You don’t need a padrón (municipal registration) or a Spanish bank account to buy a prepaid SIM in Spain.
One thing to bear in mind: some mobile providers no longer accept foreign national ID cards, while others are more flexible with EU ID cards. So bringing your passport is the safest bet, even if you’re an EU citizen with a national ID.
Cost control: you only pay for what you use
The advantage of paying up front for your mobile phone service is that you know the exact cost of the service from the outset. You only pay for what you use and you decide how much you want to top up each time you do it. This allows you to avoid surprise charges, inflated bills, hidden overage fees, and unexpected roaming charges.
How much data do you actually need?
Data needs in Spain won’t necessarily mirror your experience in the UK, Germany, France or wherever you live now. Life here tends to unfold outside the home and Wi-Fi is everywhere and usually reliable, so you’ll find yourself constantly connecting to the Wi-Fi in bars, restaurants, shops and plazas and using less mobile data than you’d expect. Obviously, it also Obviously, it depends on your habits: WhatsApp and Google Maps use very little, while streaming video will gobble up your gigabytes. Check out my post about data requirements in Spain for a more in-depth look at the subject.
Where to buy a Spanish SIM and how to top it up
You can buy a Spanish SIM at an airport kiosk, but expect to pay a convenience markup if you do. Alternatively, you can purchase one in a phone carrier store or a supermarket/convenience store. A city carrier store usually offers the best value and a good plan range, and handles ID registration on the spot.
In some cases, it is possible to purchase a SIM card online. For instance, ordering a Lobster SIM on its website is incredibly easy; the card is sent to your chosen Spanish address and you activate it as soon as you arrive.
How to top up your Spanish SIM card:
1. Carrier app (easiest for most people)
- Download the provider’s app and log in with your phone number
- Add credit via debit/credit card (foreign cards usually work fine) and select a top-up amount or bundle
2. Carrier website
- Look for “Recargar” or “Top up”, then enter your phone number and card details
3. In-store
- Any official carrier store or authorised reseller can top up your credit in person
Depending on the carrier, you may also be able to top up at bank ATMs, supermarkets, kiosks and tobacco shops (“estancos”) using a voucher code. Foreign debit/credit cards generally work fine online, top-ups are usually reflected instantly, and if you’re not using the line often, set a reminder to top up every month: if you don’t use your SIM for 6–12 months, your number will probably be deactivated.
A prepaid eSIM is an alternative option, as you can buy it online and activate it immediately. Since it isn’t a physical card, there’s no need to have it shipped anywhere. Just be aware that many eSIMs are data-only: they give you mobile internet access within Spain, but you don’t get a real Spanish phone number (+34) that people can use to call or text you via the local network. Lobster’s eSIM, on the other hand, comes with a Spanish number and works exactly like the physical SIM.
Who does pay-as-you-go suit best? Seasonal residents, students or second home owners?
Pay-as-you-go suits all three groups fairly well, but for different reasons. Let me break it down for you.
Seasonal residents
A good fit for those who move south during the colder months of the year. PAYG lets you “pause” spending when you’re not in Spain; there is no monthly contract to cancel and restart, no direct debit tied to a Spanish bank account, and you can simply top up again when you return next season. This way, you avoid paying for months of service you’re not using, which a contract plan would require. However, if left unused for months on end, you run the risk of your SIM expiring, as most Spanish providers deactivate numbers after around 6 months of inactivity, which usually means losing your number too. Lobster is more generous here: you can pause your line for up to 12 months and keep your number.
Students
A strong fit for students, especially those on short exchange programmes (a semester or an academic year, like the Erasmus programme). No credit check, no long-term commitment, and flexibility to switch providers or top up only what you need, which is perfect for a limited budget. On the flip side, heavy day-to-day data users on a tight budget might find a low-cost contract plan cheaper over a full year. That said, for anything under 6–12 months, PAYG usually makes the most sense.
Second home owners
Of the three groups, this is probably the one least suited to PAYG, particularly if you are constantly back and forth between Spain and your home country. In your case it might make more sense to have a contract linked to your Spanish address and a reliable long-term number, while PAYG makes sense if your visits are irregular and infrequent. If you do opt for PAYG, bear in mind the risk of your SIM being deactivated and losing your number if you don’t use it at all over several months.
My verdict
Seasonal residents, students and second home owners can all benefit from the flexibility and lack of commitment offered by PAYG, but seasonal residents and second home owners should bear in mind PAYG’s number-expiry risk and weigh it up against the advantages of a contract’s stability, depending on how often you’re actually in Spain.
Why Lobster is the best option if you need a Spanish SIM card
Compared to a mobile phone contract, a pay-as-you-go SIM card offers several advantages to expats recently arrived in Spain and to those living here temporarily or seasonally. Lobster’s PAYG plans are ideal in that you can pause the service whenever you want for up to 12 months without being penalised or losing your number. And, as I mentioned above, your passport is all you need to get started.
Lobster’s PAYG plans allow unlimited calls to the UK, many other European countries and the US, and include very generous data allowances. Just choose the plan that fits your needs and switch whenever you like. Plus, everything is in English, so you don’t need to worry if your Spanish is elementary or non-existent.
I wish I had known about Lobster when I first moved to Spain; it would have made my life a lot easier in those early days when I was struggling with the language and Spanish bureaucracy, and I’d have saved a good bit of money too.
Frequently asked questions
Do pay-as-you-go SIM cards expire?
Yes, pay-as-you-go SIMs in Spain expire if you don’t use them.
If you stop topping up or using the SIM during a long stretch of inactivity, the operator will deactivate the line and you’ll lose your number. The exact inactivity window varies by provider. The safe rule of thumb is to top up at least once every 6–12 months. Most Spanish carriers let you do this without needing to be in the country.
How much is a SIM card in Spain?
The cost of a prepaid SIM in Spain typically ranges between €10 and €25, with price scaling based on plan duration and data/call allowances. Most plans renew automatically every 28–31 days as long as you have credit. The SIM card itself is often just the cost of your first top-up; you’re not paying separately for “the plastic”, you’re paying for your first data/call package. Data-only eSIMs can sometimes be cheaper, though they don’t give you a real Spanish phone number (+34), as I explain above.
