In short: O2's eSIM is a digital duplicate of your physical line: you request it from the client area, it keeps your number and plan, and within the EU it works without extra cost. Outside Europe, roaming skyrockets, so it's a good idea to add a data eSIM for your destination to avoid overpaying.
If you're an O2 customer and want to switch to eSIM, here's what you need to know: how to request an O2 eSIM, how much the duplicate costs, which phones support it, and, most importantly, what to use when traveling outside Spain to avoid shocking roaming charges. This is an informative and independent guide; we are not O2, but we'll tell you what you need to know directly.
Does O2 have eSIM and how do I request it?
Yes, O2 (Movistar's low-cost brand) offers eSIM for its mobile lines. You request it from the client area in the app or on the website, choosing to switch from a physical SIM to an eSIM, and you'll receive a QR code to install it on your compatible mobile phone.
The process is like a SIM duplicate: you request the change, O2 deactivates your old physical SIM and activates the eSIM with your same number. You don't change your plan or lose your line; only the support changes, from plastic to a digital profile inside the phone. It's useful if you're getting a new phone that no longer has a SIM tray, if you want to have a second line without a free tray, or if you simply prefer not to rely on a card that can be lost. If you're coming from a different starting point, you might be interested in first understanding what exactly a virtual eSIM is before taking the plunge.
Price of O2 eSIM duplicate
The switch from a physical SIM to an eSIM with O2 is processed as a duplicate, and its cost may vary depending on current promotions. It is usually a low or even free amount in some cases, but it's worth confirming in your client area before processing it, as conditions change.
We don't want to give you a fixed figure that might be outdated tomorrow, so the recommendation is clear: check the exact amount in the O2 app just before requesting the change. Also, keep in mind that each time you change phones, you'll have to request the eSIM profile again (it doesn't transfer like a physical card), and that new duplicate might have a cost.
Before processing: check the O2 app for the duplicate price and if there's any promotion that makes it free. Duplicate fees often change.
Devices compatible with O2 eSIM
O2's eSIM works on most mid-range and high-end mobile phones released since 2019, as well as on some smartwatches with connectivity. The requirement is not from O2, but from the device itself: factory-installed and unlocked eSIM chip.
Broadly speaking, these are the devices that usually support O2's eSIM:
| Type | Compatible examples |
|---|---|
| iPhone | iPhone XS/XR onwards |
| Samsung | Galaxy S20 and later, Z Fold/Flip |
| Pixel 3 and later | |
| Apple Watch | Cellular models compatible with O2 |
An important detail about the Apple Watch: it appears quite a lot in O2 eSIM searches because the watch uses an eSIM profile linked to your line. If this is your case, it's a good idea to confirm with O2 that your plan supports the watch function before buying it, because not all operators enable it in the same way.
Activate O2 eSIM step by step
Once O2 sends you the QR, activating it is quick. With Wi-Fi and your phone in hand, you scan the code from the mobile data settings, wait for the profile to install, and your number will be operational in minutes.
The usual path, so you don't get lost:
- Request the eSIM change from the O2 client area.
- Receive the QR (by email or in the app itself).
- Go to Settings > Mobile Data > Add eSIM and scan the QR.
- Follow the wizard and wait for activation confirmation.
If the QR code gives an error when scanning, don't panic: it's usually a temporary glitch with a solution. Check that you have stable Wi-Fi, that your phone has space for another eSIM profile, and that you're not trying from mobile data. If you want to review the general step-by-step process, we have a guide on how to install an eSIM.
O2 roaming when traveling: what it really costs
Within the European Union, your O2 plan allows you to use your data without extra cost (roam like at home). The problem arises outside the EU: in destinations such as the United States, Japan, Morocco, or Turkey, roaming is billed separately and is expensive per megabyte.
Here's the nuance many people overlook: within Europe, you're fine, but as soon as you cross outside, your O2 eSIM is still your home number, not a cheap data solution for travel. Before leaving the EU zone, it's wise to understand what data roaming is and how it affects you depending on the country, to avoid an unpleasant bill.
Key fact: your operator's eSIM and a data eSIM for travel are different things. The first is your line; the second, cheap internet abroad. You can (and should) have both.
The alternative for travel: a data eSIM
When you travel outside the EU, the most cost-effective option is to leave your O2 eSIM for calls and SMS only and add a destination-specific data eSIM. This way, you browse at local rates without touching your home plan or risking roaming charges.
The best part is that you can have both at the same time: your O2 line keeps your number for important matters, and the travel eSIM handles all your internet needs. For example: you travel to the United States, keep your number in case the bank calls you, and use the United States eSIM for Maps, social media, and WhatsApp without overspending. If your route takes you through several European countries outside the EU (UK, Switzerland, Turkey) or you simply prefer to have a single plan for the entire continent, the Europe eSIM covers several destinations with one profile. And to fully understand the difference, the guide eSIM vs. roaming makes it perfectly clear.
A tip that often goes overlooked: activate your data eSIM BEFORE you land, using the Wi-Fi at your departure airport or on the plane if available. This way, you'll arrive with internet already working instead of fumbling for coverage as soon as you get off the plane, which is when it's most needed to order a taxi or find your hotel. If you also want to stretch your data as much as possible during your trip, the guide on tricks to save data with an eSIM has very specific adjustments (which apps to limit, when to download offline maps) that make a difference on long trips.
Myths about O2 eSIM (and what almost no one tells you)
There's a lot of confusion around this topic, so let's clarify what really matters before it catches you in the middle of a trip.
Myth 1: "O2 eSIM is good for cheap international travel." Not true. O2 eSIM is your Spanish line in digital format: within the EU, it travels with you without extra cost because European roaming regulations mandate it, but outside the EU, it's billed as normal roaming, not as a data plan designed for tourists. If you're looking for cheap browsing in Morocco, Turkey, or the United States, you need a data eSIM for that destination, not a duplicate of your home line.
Myth 2: "If I activate the eSIM at the airport, I'll have service when I land." Bad idea. Installing an eSIM profile requires stable Wi-Fi or data, and airport networks don't always cooperate just before boarding. Activate it at home, calmly, one or two days before flying; this way, if something goes wrong (a QR that doesn't scan, a temporary network error), you have time to call O2 support without the stress of the boarding gate.
Myth 3: "Having two eSIMs at once will mess things up." On the contrary, it's the most practical combination if you travel outside the EU: you leave the O2 eSIM for voice and SMS only, and add a data eSIM for the destination for internet. The step that almost everyone forgets is to go into Settings and tell the phone which line uses data by default; if you don't, the phone can use O2 data on roaming without you realizing it until you see the bill. Also check which apps have background data activated (social networks, automatic backups) so they don't consume from the wrong line while your phone is in your pocket.
A nuance that almost no one explains: if you are going to install the profile from the hotel or airport Wi-Fi, do it wisely. The process itself is not sensitive, but connecting to open networks without protection to manage any transaction with personal data can be; here it is worth taking a look at eSIM, VPN and privacy on your trip. And if you are still undecided between sticking with an international physical SIM or making the definitive leap to eSIM for your next trips, it is worth comparing real coverage, price and convenience of changing cards in each country before deciding.
Frequently asked questions
Does the O2 eSIM keep my phone number?
Yes. When switching from a physical SIM to an eSIM with O2, you keep your same number and your same plan; only the support changes, from a plastic card to a digital profile inside the phone. It's the equivalent of a SIM duplicate, not a new activation.
Can I use the O2 eSIM abroad?
Within the European Union, you can use your data without extra cost, just like in Spain. Outside the EU, roaming applies and can be expensive, so for those trips, it's advisable to add a data eSIM for the destination and leave the O2 eSIM only for calls.
How long does it take for O2 to activate the eSIM?
Once you request the change and receive the QR, activation usually completes within minutes after scanning it. In some cases, O2 first deactivates your physical SIM, so there might be a brief interruption until the eSIM profile becomes operational with your number.
Do I need to re-request the eSIM if I change phones?
Yes. Unlike a physical SIM, the eSIM profile does not transfer automatically from one phone to another. When you get a new phone, you will need to request the profile from O2 again, and that process may incur a cost depending on the current terms and conditions.
Does the O2 eSIM work with Apple Watch?
Apple Watch models with Cellular connectivity can use an eSIM profile linked to your O2 line, provided O2 supports it for your plan. It's advisable to confirm this with O2, as not all operators or all plans enable the watch function.
Can I have the O2 eSIM and a travel data eSIM active at the same time?
Yes, and it's the most practical combination outside the EU. Most compatible phones allow two eSIM profiles to be installed (or eSIM plus physical SIM) and let you choose which one uses data and which one uses calls. This way, you keep your O2 number for important matters and use the destination's eSIM for internet, without relying on roaming.
What should I do if my O2 eSIM has no signal as soon as I land?
Before assuming a fault, check the basics: activate and deactivate airplane mode, check that data roaming is enabled for the O2 line, and try setting the network selection to manual instead of automatic. If it still doesn't get a signal, contact O2 support; meanwhile, if you also have a data eSIM for the destination, that should still provide internet even if your Spanish line takes time to reconnect.
Conclusion
Requesting an O2 eSIM is straightforward: you order it from your client area, confirm the duplicate price, check that your mobile is compatible, and scan the QR. For travel within the EU, it's perfectly fine, but outside Europe, it's best to rely on a data eSIM for your destination. Travel with peace of mind and get connected upon landing without fear of the bill.
