If you want to convert your SIM to eSIM you need to ask your operator (Movistar, Vodafone, Orange, etc.) to transfer your number from the physical card to the phone's digital chip. This process is free or costs a few euros and takes only a few minutes. Here's how to do it step-by-step and without complications.
Converting your line vs. installing a travel plan
Converting your physical SIM to eSIM means transferring YOUR Spanish operator's number from the plastic chip to the phone's integrated chip. It's an internal portability of the support, not a change of plan. Installing a data plan for international travel is different.
This is the most common confusion, because many people search "convert SIM to eSIM" thinking of two different things:
- Converting your line: your usual operator provides your same number in digital format. You continue with your current plan, minutes, and data in Spain. The support changes, not the service. This is what you need if your new phone no longer has a card slot.
- Installing a travel plan: you buy a data plan to use in your destination country (Thailand, Japan, USA, etc.), activate it with a QR code, and browse there without paying your operator's expensive international roaming charges.
If you want to fully understand the concept before proceeding, reading what an eSIM is will help. In this guide, we focus on the former: converting your Spanish line. At the end of the article, you'll see how the latter fits in when you travel abroad.
Requirements: compatible phone and operator
Before you start, you need two things: a phone that supports the digital chip and an operator that offers the conversion. Most mid-range and high-end phones from the last five years are compatible. Even so, it's a good idea to check to avoid surprises halfway through the process.
Review this quick list before requesting the change:
- Compatible phone: iPhone XS/XR and later, most Samsung Galaxy from S20, Google Pixel from 3, and many recent Xiaomi, Oppo, or Motorola models. If you have doubts, see how to check if your phone is compatible or consult our compatibility page.
- Operator that allows it: Movistar, Vodafone, Orange, Yoigo, O2, Digi, and most MVNOs (Pepephone, Lowi, Simyo, etc.) already offer the conversion. Some small MVNOs may take longer or require extra conditions.
- Verified identity: as with any management of your line, you will need your DNI (Spanish ID card) and, sometimes, be the contract holder.
- Wi-Fi handy: to download the profile and scan the QR during activation.
Tip: dialing *#06# on your phone will show you if your phone has an EID (the eSIM identifier). If it appears, your phone supports it.
Step-by-step with your operator in Spain
The process is very similar across all operators: you request the conversion, receive a QR code or activation code, and scan it with your phone. In a few minutes, your number will be working on the digital chip, and the plastic card will cease to have service.
These are the typical steps, although each operator has its own path within the app or client area:
- Request the change: go to your operator's app or website, or call customer service, and ask for "physical SIM to eSIM conversion." Some also manage it in a physical store.
- Confirm your data: verify your identity and the number you want to convert.
- Receive the QR: they will send it to you by email, display it on screen, or print it in-store.
- Scan and install: on your phone, go to Settings > Mobile Data > Add eSIM (iPhone) or Connections > SIM Manager (Android) and scan the code.
- Activate the line: when the profile downloads, your old card will stop working, and the digital one will take over.
The QR installation procedure is almost identical to that of a travel plan; for detailed screenshots, see how to install an eSIM. The difference is that here the QR is provided by your operator, not a data store.
Cost and time frame
The conversion is usually free or very inexpensive, and activation is almost immediate once you receive the QR. Nevertheless, confirm the price and timeframes with your operator before starting: conditions change, and each company sets them its own way.
These are the typical ranges in Spain in 2026. They are indicative: consult the official operator's website for the exact data.
| Concept | Typical Range (2026) | Notes |
|---|---|---|
| Conversion cost | €0 – €10 | Many do it for free; some MVNOs charge a small processing fee. |
| Activation time | 1 minute – a few hours | Immediate if managed via app; slightly longer if it involves manual verification. |
| Period without service | 0 – a few minutes | The old line is cut off just as the new one is activated. |
| Changes per year | Usually several allowed | Useful if you change phones; some operators limit frequency. |
As you can see, it's neither an expensive nor a slow operation. It's reasonable to do it at home with Wi-Fi and without rushing, in case activation takes a little longer than expected.
Your usual number and dual SIM
By converting your SIM, you keep the exact same phone number; nothing changes for those who call or text you. What changes is the physical support. And, incidentally, you gain an interesting advantage: the possibility of using two lines simultaneously on the same phone.
This is very useful for those who travel or have a work and personal line. With your number on the digital chip, you can insert another card into the plastic slot (if your phone still has one), or install a second digital line. This is how the combination of two lines works, which we explain in how dual SIM works.
Keeping your number is automatic: the conversion migrates your own line; it's not a port to another company. If you're concerned about keeping it, you have it covered in your eSIM with the same number.
Having your Spanish line digital and a free slot for a second one is precisely what best combines with travel. You arrive at your destination, activate a local data plan in the second slot, and continue receiving your calls from Spain on your usual number.
And for international travel, what then?
Converting your line doesn't give you cheap data outside the European Union. For that, you need a data plan for your destination country, which is installed separately. It's a different product, designed for browsing abroad without paying your operator's international roaming charges.
Within the EU, there's no problem: your Spanish plan works with EU roaming at no extra cost. The trouble starts when you leave the block: the UK, Morocco, USA, Thailand, Japan... There, your operator's prices skyrocket, and a lapse could cost you a nasty bill.
The solution is simple and connects with what you've already learned:
- You keep your Spanish digital number for important calls and messages.
- You buy a data plan for the country you're visiting and activate it as a second line.
- You browse at local rates and only pay for what you consume.
You can compare destinations and prices in our data plans for travel. Installation is the same as you already know: a QR code, Wi-Fi, and ready in 1 minute. Converting your line at home and adding local data upon arrival is the combination that keeps your phone bill under control.
Common errors when converting SIM
Most problems when converting a SIM come from doing it in a hurry or without checking compatibility. If you review a couple of details before you start, the process will go smoothly on the first try.
These are the most common mistakes we see and how to avoid them:
- Deleting the QR too soon: save it until you confirm that the line is working. Some operators only allow scanning it once.
- Running out of a backup card: once converted, you cannot revert to the plastic card unless you request a duplicate. Do this when you don't critically depend on your phone.
- Activating without Wi-Fi: the profile needs a connection to download. If you run out of data, you'll be stuck.
- Assuming compatibility: always check the model beforehand; a low-end or very old phone might not support it.
- Confusing products: converting your line does not include travel data. These are separate processes.
With these five points under control, the conversion is one of the easiest tasks you'll do with your operator.
Frequently asked questions
Does converting my SIM to eSIM change my plan or my number?
No. You keep your same number, plan, minutes, and data. Only the support changes: you switch from the plastic chip to the digital chip integrated into your phone. For those who call or text you, absolutely nothing changes.
Can I switch back to a physical SIM after converting?
Yes, but it's not automatic. You'll need to ask your operator for a duplicate of the physical card, which may take a few days and, depending on the company, may incur a small cost. That's why it's best to do the conversion without rushing and with a backup.
Do I need a travel eSIM if I've already converted my line?
To use data outside the European Union, yes. Converting your line only changes the support for your Spanish number; it doesn't make international data cheaper. For that, you install a data plan for your destination country as a second line and browse at local rates.
How long does the conversion with my operator take?
It's usually almost immediate: once you receive the QR code, activation takes about 1 minute. If the operator requires manual verification, it can take a few hours. For safety, do it at home with Wi-Fi and not right before a trip.
Is my phone compatible with eSIM?
Most iPhones from XS, Samsung Galaxy from S20, and Pixels from 3 are, as well as many recent Xiaomi, Oppo, or Motorola models. Dial *#06# and if an EID code appears, your phone supports it. When in doubt, check our compatibility guide.
Can I have two lines after converting the SIM?
Yes, and it's one of its great advantages. With your number on the digital chip, you can add a second line (another digital one or a physical card, if your phone has a slot). Ideal for separating work and personal or for traveling with local data.
Conclusion
Converting your physical SIM to eSIM is a quick, free, or very inexpensive process that keeps your usual number and plan. Don't confuse it with installing a data plan for international travel: these are separate and complementary things. Do it at home, calmly and with Wi-Fi. And when you leave Spain, add local data so that your next trip doesn't bring any surprises on your bill.
