An eSIM — short for embedded SIM — is a digital SIM card built permanently into your phone or tablet. Unlike the small plastic chip you slide into a SIM tray, an eSIM is a piece of hardware soldered directly onto your device's circuit board. Mobile operators write their network profiles to it electronically, so you can activate a new carrier plan without ever touching a physical card.
For international travelers, this is one of the most practical advances in smartphone technology in years. The old way meant landing in a foreign country, finding a mobile operator's shop, showing your passport, waiting in a queue, and hoping the staff spoke enough English to help you pick the right plan. The new way means buying a data plan from your sofa, scanning a QR code, and stepping off the plane already connected.
How does an eSIM work?
When you purchase a travel eSIM from a provider like ValaeSIM, the process is simple: after checkout, you receive a QR code by email. On your phone, go to Settings → Mobile Data → Add eSIM (the exact wording varies slightly by device and OS version). Tap to scan a QR code, point your camera at the code in the email, and the carrier profile downloads and installs in a few seconds.
Your phone can store multiple eSIM profiles simultaneously — typically between five and twenty-five depending on the device. This means you can keep your home SIM active for calls and messages while the ValaeSIM profile handles your data abroad. No juggling, no missed calls from family while you swap cards at the airport.
Which devices support eSIM?
eSIM support became standard across flagship and mid-range smartphones from 2018 onwards. The most common compatible devices are:
- iPhone XS, XR, and every model since — iPhones sold in the US since the iPhone 14 are eSIM-only, with no physical SIM tray at all
- Samsung Galaxy S20 and later, including many Galaxy A-series mid-range phones
- Google Pixel 3 and later
- iPad Pro (2018 and later) and iPad Air (3rd generation and later)
- Many recent Windows 11 laptops and Chromebooks with built-in LTE or 5G
To use a travel eSIM, your device must also be carrier-unlocked. Phones bought outright from Apple, Samsung, or Google are almost always unlocked. Phones sold on contract through a carrier may be locked — contact your home carrier to request an unlock if needed. Most carriers do this for free once your minimum contract term has passed.
eSIM vs. physical SIM: the practical differences
For day-to-day use at home, the difference is invisible. Where it matters is when you cross a border:
- Speed of setup: An eSIM takes 90 seconds to install from your email; a physical SIM means finding a shop on arrival
- Multiple networks: eSIM lets you run your home and travel number simultaneously; a physical SIM swap temporarily takes you offline
- No risk of loss: eSIM is built into your phone; physical SIM cards are tiny and easy to drop in a taxi or hotel room
- Instant top-up: Run out of data on an eSIM? Buy more online in two minutes; with a physical SIM you'd need to return to a shop
How much does a travel eSIM cost?
Significantly less than roaming. A typical carrier charges €10–€15 per day for international roaming data. A ValaeSIM plan for the same destination starts at a fraction of that — plans for popular destinations like Germany, France, and Japan start from €2–€4 for a gigabyte of data valid for 30 days. Bundles of 10 GB and above include a built-in 14% discount.
Browse the full list of available plans on our destinations page, or check the how it works page to see the three-step setup process before you buy. The entire experience — from checkout to connected — takes less than five minutes.