Best eSIM for Spain in 2026

When planning a trip to Spain in today’s world, or any other destination, we cannot deny the importance of staying connected online, be it for business or just to stay in contact with loved ones.

These days, the single biggest question on almost any traveller’s lips when visiting Spain are:

What is the best eSIM for Spain?

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Are you planning a vacation within Spain or going on a cruise from Barcelona? Are you an international business professional or a digital nomad backpacker? Maybe you’re starting an extended tour of Europe from Spain. Either way, mobile internet for travellers is a big thing. It’s about as necessary as fresh air.

Why do you need mobile cellular internet in spain?

When on vacation in Spain you may want to share your travel experiences in real-time with loved ones back home, or like us, you also have a business to run and may not have time to look for WiFi (that works) in order to make an important call or answer an urgent email.

What’s the WiFi password? That used to be a thing, but who has time for that anymore? This is assuming the WiFi even works after you get the coveted password, the sign in procedure for hotel or airport WiFi often taking longer than it does to just buy and download an eSIM, before you even leave home.

But even if the WiFi works, you don’t know who else is on the same network, snooping on your activities. No, public WiFi isn’t very safe, even if you used a password, which countless others may have also used.

However, we do still use public WiFi from time to time, but not without a VPN.

While local data SIM cards can be cheaper in many countries, the biggest catch is you first need to be physically present in the country. Then, you have to find a place that sells them. This of course depends on how you entered a country. Airports might seem like the easiest way, however, several hundred other tourists might also need a SIM at the same time. And so you wait, without a phone connection to tell your friends who are waiting outside why you’re taking so long.

Also, you stand a good chance of being royally ripped off at many airports, aka tourist traps. This can often be due to the language barrier, but even more so if you try get a local SIM in town.

Then of course the process of buying a local SIM with phone number varies wildly from country to country. Some countries still don’t require ID, but many now do, in which case the process can be painful, much like roaming charges from your home provider.

What is an e-SIM card?

Enter eSIM. An absolute game changer. 

I got an iPhone 12 mini in 2021. It has settings and menu items that mention eSIM, but I had little to no idea what an eSIM was when I got the phone, so I largely ignored it all and carried on collecting and fiddling with traditional plastic SIM cards. You know, these annoying little things that you often need a pair of micro tweezers to handle, and heaven help you if you lose the one from your primary home provider.

And where do you keep your physical SIMS when not in use?

It has happened to me, a few times, at airports and other places, trying to swap SIM cards, only to have one pop out again and go skidding off under someone else’s chair. “Excuse me, just need to retrieve my SIM card….”

Then I discovered what an eSIM actually is. My first thought was, where has this tech been all my life?

eSIM had been quietly lurking in the shadows since 2016, getting ready to be unleashed on the world of mobile communications.

Now it’s here, taking the world by storm.

And here we are, with our very own eSIM brand: Simunye Mobile

What’s our mission? To simplify what other providers make complicated, something that should not be; connecting to the internet.

What is the difference between an e-SIM and regular SIM?

Some of the key differences and advantages between eSIMs and regular physical SIMs:

• Embedded SIM: The only real difference between an eSIM and a regular SIM is the credentials that are usually stored on a traditional plastic SIM are now stored on a chip embedded in your phone, hence the name Embedded Subscriber Identification Module. That’s basically it.
• Ease of use: What could often take several hours, waiting in line at a busy airport kiosk, or maybe even weeks before you could get an international travel data SIM delivered to your house now takes less than 10 minutes. From the comfort of your own couch you can just simply download and install a single eSIM profile that can be used all over the world.
• Environmentally friendly: And this is a big one. Instead of mobile providers having to manually provision and distribute their plastic SIM cards by hand, bicycle, road, rail, sea and airfreight all over the world, with eSIM you just download and provision your SIM profile over the internet within minutes. This has a massive environmental benefit. They are small, but over time the amount of plastic waste and environmental damage ads up and those very little things become a very big problem. Every year, millions upon millions of plastic SIM cards and their plastic packaging is used only once, then thrown away in to a landfill site.

What is the best e-SIM for Spain?

Our (slightly biased) Simunye Mobile e-SIM review

To be honest, after several years of research and trying out quite a few travel eSIM providers, the most convenient eSIM for travellers visiting Spain, or any other country for that matter, is Simunye Mobile. 

Why is this review slightly biased? Because we created Simunye Mobile to remove all the bling and fluff that so many other operators add to their services.

Why use a Simunye Mobile e-SIM in Spain?

Simply put: complete ease of use, and no ID registration required.

• You only need 1 Simunye Mobile eSIM for over 200 destinations. Just buy plans as needed
• You can hot-spot / tether your phone to other devices and use your whole plan this way.
• We support 5G, where locally available, for no extra charge.
• You can move the same eSIM profile up to 5 times.
• We offer unlimited data plans with a crystal clear FUP.

Is my smartphone compatible with e-SIM?

Good question, because not all smart phones are. But this is changing, quite quickly. 

Soon all smart phones will be eSIM compatible with many being eSIM only, such as iPhone for sale in the USA.

But the easiest way to tell if your phone supports eSIM is to simply look in SIM settings.

Best eSIM for airline crew and seafarers

Simunye Mobile is also an excellent international data eSIM option for all airline, ship’s and yacht crew.

Maybe you’re moved to another vessel or scheduled on another flight to another country you’ve never been to before on short notice.

You may not have time to look for and install yet another local SIM. You may also not have an internet connection to download and install yet another eSIM. Your home carrier may also not work/roam where you end up.

Upon arrival at your surprise destination you simply toggle on your Simunye Mobile global eSIM.

Just bear in mind we unfortunately do not operate on marine GSM networks such as ‘Cellular at Sea’. So, you can only use Simunye Mobile when you are within range of any terrestrial GSM partner network. This can often be up to 30km off-shore.

As already mentioned, Simunye Mobile currently works in almost every country in the world.

Can I use my home carrier together with Simunye Mobile?

Yes, if your phone supports dual-SIM/eSIM, but most importantly, your phone must be carrier unlocked. Meaning, your home carrier allows you to use another SIM or eSIM in your device.

However, this usually only applies to phones included for ‘free’ with long term contracts. If you bought your phone for cash from a carrier agnostic shop you shouldn’t have this problem. If you ever buy a used device, be sure to first check if it is unlocked.

When a carrier locks a phone it is mostly to prevent you from taking advantage of cheaper rates on a whim while travelling. This in turn allows them to charge you what they want for roaming. They may offer roaming plans themselves, but I have seen such plans costing way more than 10 times what we offer.

So be sure to set your phone to use Simunye Mobile for data. If you don’t, you may still use your home carrier for data when abroad which will most likely result in a nice roaming bill waiting for you at home, or a joyful sms reminding you how grateful they are for your business, together with a notice you have just reached $500 data use, in the first 2 days away.

In most cases incoming texts are free worldwide, but you are highly likely to be charged a pretty penny for incoming calls when roaming anywhere in the EU using a home carrier (SIM) that is not from the EU, and the other way around.

You might also want to check if your home carrier offers any kind of roaming at all.

Does Simunye Mobile come with a local phone number?

No, we do not offer phone numbers. Simunye Mobile is data only. But you can still use your favourite VoIP app like Signal, Messenger, iMessage, etc.

Best VPN for international travellers

Now even though the eSIM is the best invention since sliced bread, you may still want to make use of free public WiFi in hotels, restaurants, airports or train stations.

We do so all the time, but we do not use public WiFi anymore without NordVPN to watch our backs and to hide our activity from prying eyes. 

Even if you use a password to access WiFi, you don’t know who else has that password. There is free ‘sniffing’ software that allows a user to ‘sniff’ around the network they are connected to and they can watch, or intercept, what you’re doing. 

But free networks also track and profile you for advertising purposes.

NordVPN will help protect you in both cases, and then some. 

You can install Nord on up to 10 devices with a single account. 

While a mobile data connection is countless times safer than public WiFi, you can also use NordVPN on your cellular data connection, especially in a country you may not trust or if you need the same IP no matter where you are.

Any questions I haven’t already answered? Any clarification needed? Drop a comment below and I’ll get right back to you!