Disclaimer: This website is for informational purposes only and is not an official website of any mobile operator or eSIM service provider.
Before purchasing an eSIM, always check the latest terms, prices, coverage, activation rules, and device compatibility directly with the selected provider.
The Basics: What is an eSIM?
An eSIM, or embedded SIM, is a digital version of the traditional SIM card. Rather than being a removable plastic card that you insert into your phone, an eSIM is a small chip soldered directly onto your device's circuit board. You cannot physically remove it. Instead, you activate it by downloading a digital profile from a mobile network provider.
The "e" in eSIM stands for "embedded." The technology is standardised by the GSMA (Global System for Mobile Communications Association), which means eSIM-compatible devices from different manufacturers follow the same technical specifications.
How Does eSIM Differ from a Physical SIM?
| Feature | Physical SIM | eSIM |
|---|---|---|
| Form | Removable plastic card | Chip embedded in device |
| Activation | Insert card | Download digital profile |
| Switching plans | Swap physical card | Switch profiles in settings |
| Multiple profiles | One card at a time | Multiple profiles stored, one active |
| Physical handling | Required | Not required |
| Risk of loss/damage | Card can be lost or damaged | No physical card to lose |
Why Do Tourists Use eSIM?
For tourists, the main appeal of eSIM is convenience. You can purchase and activate a data plan for your destination before you leave home, without visiting a mobile shop or waiting at an airport kiosk. When you land, your phone is already connected.
eSIM also allows you to keep your home SIM active simultaneously (on phones that support dual SIM), so you can receive calls and messages on your regular number while using a local or regional data plan.
When eSIM May Be More Convenient Than Roaming
International roaming uses your home SIM on a foreign network, with charges set by your home carrier. These charges can be high, particularly outside the EU. An eSIM with a dedicated local or regional plan can sometimes offer more data at a lower cost, though this is not guaranteed and depends on your home carrier's roaming rates and the eSIM plan you choose.
For tourists visiting multiple European countries, a regional eSIM can eliminate the need to purchase a new SIM card in each country. For those visiting non-EU countries like Switzerland or Norway, where EU roaming regulations do not apply, an eSIM may offer a more predictable cost structure.
When a Physical SIM or Regular Roaming May Be Better
Not every situation calls for an eSIM. If your phone does not support eSIM, you will need to use a physical SIM. If your home carrier offers generous EU roaming as part of your existing plan, you may not need an eSIM at all. For very short trips to EU countries, your existing roaming allowance may be sufficient.
Physical SIM cards purchased locally can sometimes offer better value than eSIM plans, particularly for longer stays in a single country. The right choice depends on your specific circumstances.
What is a Data Plan?
A data plan defines the terms under which you can use mobile internet. Key elements include: the amount of data (in gigabytes), the validity period (how long you can use it), the geographic coverage (which countries), speed limits (including fair use thresholds), and any restrictions (such as hotspot/tethering).
Local, Regional, and Global eSIM Explained
A local eSIM is a plan tied to a specific country, typically using that country's domestic networks. A regional eSIM covers multiple countries under one plan — for Europe, this usually means EU countries and sometimes neighbouring non-EU countries. A global eSIM covers many countries worldwide, offering maximum flexibility at typically higher per-gigabyte costs.
Common eSIM Limitations
- Not all phones support eSIM. Check your device before purchasing.
- Some phones sold in certain countries have eSIM disabled or restricted.
- Carrier-locked phones cannot use eSIM from other providers.
- Some eSIM profiles can only be installed once and cannot be transferred.
- Coverage depends on network partners and is not guaranteed everywhere.
- Fair use policies may reduce speeds after a certain data threshold.
Glossary of eSIM Terms
| Term | Definition |
|---|---|
| eSIM | Embedded SIM — a digital SIM chip built into the device. |
| Profile | A digital file containing network credentials, downloaded to activate an eSIM. |
| QR Code | A scannable code used to download and activate an eSIM profile. |
| EID | Embedded Identity Document — the unique identifier of your eSIM chip. |
| IMEI | International Mobile Equipment Identity — your phone's unique identifier. |
| APN | Access Point Name — network settings required for mobile data to work. |
| Fair Use Policy | A rule limiting high-speed data to a threshold, after which speeds are reduced. |
| Throttling | Reducing data speeds after a usage threshold is reached. |
| Dual SIM | A phone feature allowing two SIM profiles (physical + eSIM) to be active simultaneously. |
| Carrier Unlock | Removing a restriction that limits a phone to one carrier's SIM cards. |
| Roaming | Using your home SIM on a foreign network, typically at additional cost. |
| Data Plan | A mobile internet package defining data volume, validity, coverage, and terms. |
Short FAQ
No. eSIM requires specific hardware. Check your phone's specifications or see our Phone Compatibility guide.
Most devices can store several profiles, but only one (or two on some devices) can be active at a time.
eSIM uses the same security standards as physical SIM cards. The profile download process is encrypted.