An eSIM (embedded SIM) is a built-in chip in your phone — the digital version of the traditional plastic SIM card. There's no need to poke a pin into the side of your phone or swap tiny cards around: the whole process happens digitally, in a couple of minutes.
How does an eSIM work?
A traditional SIM card is a small piece of plastic you slot into your phone. An eSIM, by contrast, is a chip soldered onto your phone's mainboard, onto which you can digitally load different mobile-carrier profiles.
The process is simple:
- You buy an eSIM data plan — for example from the eSIM Surfer app
- You receive a QR code — which you scan with your phone's camera
- Your phone downloads the profile — this requires a Wi-Fi connection
- Activation — most plans activate automatically in the destination country
The whole process takes no more than 2–3 minutes.
eSIM vs. physical SIM: what's the difference?
| Feature | Physical SIM | eSIM |
|---|---|---|
| Size | Nano/Micro card | Built-in chip |
| Installation | Swap the card | Scan a QR code |
| Purchase | Shop or post office | Instantly, online |
| Multiple carriers | Requires a card swap | Switch digitally |
| Can be lost | Yes | No |
| Dual SIM | Needs two card slots | Physical SIM + eSIM |
Why is an eSIM great for travel?
The real power of an eSIM shows when you travel abroad. Instead of:
- paying expensive roaming fees to your home carrier,
- queuing at the airport for a local SIM card,
- or relying on unreliable hotel Wi-Fi,
...you simply buy an eSIM data plan for your destination before you leave. When you land, you have internet immediately, and your home number stays active on the physical SIM.
Which phones support eSIM?
Apple iPhone: XR, XS and every newer model (from 2018). US iPhone 14 and newer models are eSIM-only.
Samsung Galaxy: From the S20 series onwards, including the foldable Z Flip and Z Fold models.
Google Pixel: Pixel 3 and every newer model.
Other manufacturers: Motorola Razr, OnePlus, Huawei P40 Pro, Oppo Find X3 Pro and many more.
Important: your phone must be carrier-unlocked. If you bought it on a carrier plan and the contract period hasn't ended, it's worth checking this.
The benefits of an eSIM
- Instant: No waiting for delivery or trips to a shop — active in minutes
- Secure: Can't be dropped or lost like a physical card
- Convenient: You can sort everything out from home before you travel
- Economical: Costs a fraction of roaming fees
- Dual SIM: Your home number stays active for calls and texts
The drawbacks of an eSIM
- Not every phone supports it — older devices (pre-2018) aren't compatible
- Wi-Fi is needed for installation — the first setup requires an internet connection
- Not transferable — if you change phones, you have to reinstall the profile
How to get started
- Check compatibility: See whether your phone supports eSIM (Settings → Mobile Network → Add eSIM)
- Download the eSIM Surfer app from the App Store or Google Play
- Choose your destination and the data plan that suits you
- Install it by scanning the QR code — and you're done!
In the eSIM Surfer app you can pay in your local currency, get customer support, and buy data plans for more than 200 countries.