What Is an eSIM? Everything You Need to Know in 2026
I still remember standing in a tiny phone shop in Bangkok at 1am, jet-lagged out of my mind, trying to explain to the guy behind the counter that I needed data. Just data. He kept handing me calling plans. I ended up with a SIM that cost me $15 and barely lasted three days.
That was 2022. These days I use an eSIM, and honestly, I don't know why I ever did it the old way.
So What Actually Is an eSIM?
An eSIM (embedded SIM) is a tiny chip already built into your phone. Instead of buying a plastic card and popping it into a tray, you download a mobile data plan digitally. Usually by scanning a QR code. That's literally it.
The "e" stands for embedded. The chip is soldered onto your phone's motherboard at the factory. It's already inside your device right now if your phone was made after 2020. You just need to activate it with a data plan.
I set mine up on the couch the night before my flight to Lisbon. Took maybe 45 seconds. When I landed, my phone connected before I even got through passport control.
How Does It Work?
Here's the play:
- Buy a plan online. I use GOAN's 20GB plan because it covers 105+ countries on a single profile
- Scan a QR code that arrives in your email
- Install the profile on your phone (takes seconds)
- Turn it on in your phone settings
You can do all of this before you leave home. The eSIM activates the moment you land. No searching for a SIM shop, no language barriers, no getting ripped off because you look like a tourist.
Which Phones Support eSIM?
Most phones released after 2020 have eSIM built in. Here are the main ones:
Apple:
- iPhone XR, XS, and every model since (including iPhone 15 and 16 series)
- iPad Pro (3rd gen+), iPad Air (3rd gen+), iPad Mini (5th gen+)
Samsung:
- Galaxy S20 and newer
- Galaxy Z Flip/Fold series
- Galaxy A54, A55
Google:
- Pixel 3 and newer (including Pixel 8 and 9 series)
Others:
- Motorola Razr series
- OnePlus 12 and newer
- Most flagship Huawei and Xiaomi models
Not sure about your phone? GOAN has a compatibility checker on the FAQs page where you just pick your model and it tells you straight away.
eSIM vs Physical SIM: A Quick Look
I've used both extensively across about 30 countries. Here's how they stack up:
| Feature | Physical SIM | eSIM |
|---|---|---|
| Setup time | 15-30 min (find shop, buy, install) | Under 60 seconds |
| Availability | Need to find a local shop | Buy online from anywhere |
| Phone damage risk | SIM tray can jam or break | No moving parts |
| Multiple plans | Need multiple cards | Store several profiles digitally |
| Lost while travelling | Can lose the tiny card | Can't lose what's built in |
If you want the full deep dive on this, I wrote a detailed comparison of eSIM vs physical SIM cards that covers cost, convenience, and multi-country trips.
The biggest win? Convenience. You install your travel data before leaving home. When your plane touches down, you're online. No roaming fees. No SIM shop hunting at midnight in an unfamiliar airport.
Why Travellers Are Switching
I've been talking to other nomads and frequent travellers about this for a while now. Three things keep coming up:
1. You Keep Your Home Number
This was the big one for me. With a physical travel SIM, you have to remove your home SIM. That means no texts from back home, no two-factor auth codes, nothing. With GOAN, you get a real phone number alongside your data. Your home SIM stays in the phone. Both work at the same time (Dual SIM).
I learned this the hard way in Vietnam when I couldn't log into my bank because the verification SMS went to my Australian number, which was sitting in a ziplock bag in my backpack.
2. It Works Across Borders
Physical SIMs are usually country-specific. I once bought three SIMs in one week going through France, Switzerland, and Italy. Three shops. Three passport checks. Three different plans.
A single GOAN eSIM covers 105+ countries. I crossed from France into Switzerland into Italy and my data just kept working. No new SIM, no settings change, no interruption. You can check the full coverage map here.
3. No More Roaming Surprises
A friend of mine got a $340 roaming bill after two weeks in Croatia. She thought her carrier's "international add-on" had her covered. It didn't.
With an eSIM plan, you know exactly what you're paying upfront. GOAN's 20GB plan is $29 per person for groups of 2+. No hidden fees, no bill shock when you get home.
Common Myths I Keep Hearing
"eSIMs are complicated to set up." If you can point your phone camera at a QR code, you can set up an eSIM. Genuinely easier than changing a phone case. I've watched friends do it for the first time in under a minute. GOAN also has a visual setup guide if you want to see exactly what each step looks like.
"I'll lose my regular number." Nope. Your physical SIM stays in your phone. The eSIM runs alongside it. This is called Dual SIM and it's the whole point.
"eSIMs don't work as well as regular SIMs." They use the exact same cell towers and networks. Same speed, same coverage. The only difference is how the plan gets onto your phone.
"They're only for expensive phones." Mid-range phones like the Samsung A54, Pixel 7a, and plenty of budget models now support eSIM. It's not a premium feature anymore.
How to Get Started
Ready to try it for your next trip? Here's what I'd do:
- Check your phone compatibility
- Pick a plan on the GOAN homepage (20GB starts at $29 per person for groups of 2+)
- Get your QR code via email
- Scan it before your flight
- Land connected
No contracts. No SIM shops. No roaming charges. Just internet that works the moment you touch down.
I genuinely wish I'd known about this before that Bangkok SIM shop incident. Would've saved me $15 and about 45 minutes of confused pointing.