A short definition
An eSIM — short for embedded SIM — is a chip that's already soldered onto your phone's motherboard. Instead of a removable card, your carrier sends you a digital profile that loads onto that chip. From the outside, nothing changes: you still get a phone number, a data plan, and a signal. From the inside, there's nothing to swap.
One eSIM-capable phone can hold many profiles at once. Most people use this to keep their home number on file while running a separate travel plan on top — so they get cheap local data without losing their regular number.
eSIM vs physical SIM
| Physical SIM | eSIM | |
|---|---|---|
| What it is | A small plastic card you slot into your phone. | A digital profile loaded into a chip already built into your phone. |
| Getting it | Walk into a shop, show ID, hope they have stock. | Buy online, get a QR code by email — usually in minutes. |
| Swapping plans | Pop out the tray. Eject the pin. Don't lose the tiny card. | Scan a new QR. Keep both profiles. Switch in Settings. |
| Travel | Roaming fees, or buy a local SIM at the airport kiosk. | Activate a destination plan as you land. No queues. |
| Compatibility | Works in any phone with a SIM tray. | Needs an eSIM-capable phone (most made since 2018). |
How it works
Pick a plan
Compare plans on Esimatch — by destination, by data, by price. Buy from the provider you choose.
Get a QR code
The provider emails a QR code, usually within minutes. Don't scan it yet.
Scan on arrival
When you land, open Settings → Cellular → Add eSIM. Point your camera at the QR. You're online.
Why travelers use them
- No roaming fees. A 7-day plan in Japan costs less than one hour of T-Mobile international roaming.
- No SIM swap. You keep your home number — for 2FA, group chats, anything tied to it.
- Activates on arrival. Buy before you leave, scan in the taxi.
- Stack profiles. Pick up an eSIM in each country; switch in Settings without removing anything.
- No queues at the airport. You're online before you find baggage claim.
Will my phone work?
iPhone
iPhone XS, XR and everything newer — including all iPhone 14 and later models sold in the US, which are eSIM-only.
Android
Google Pixel 3 and later, Samsung Galaxy S20 and later, recent Fold/Flip, and most flagship-tier devices from 2021 onward.
iPad & tablets
Cellular iPads from 2018 (Pro 3rd gen, Air 3, mini 5) all support eSIM. Some Surface and Galaxy Tab models too.
Phones bought in China or Hong Kong are often eSIM-disabled by the carrier, even when the hardware supports it. If you bought yours abroad, double-check.
Common questions
Ready to try one?
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