What Is an eSIM? A Complete Guide for Travellers
Learn everything about eSIM technology — how it works, which phones support it, and why it is replacing physical SIM cards for international travel.
An eSIM (embedded SIM) is a digital SIM card built directly into your phone. Unlike traditional SIM cards that you physically insert and swap, an eSIM is activated by scanning a QR code or entering an activation code.
How Does an eSIM Work?
When you purchase an eSIM plan, you receive a QR code. Scanning this code with your phone downloads a carrier profile that connects you to a local mobile network — just like a physical SIM would, but without the plastic.
Your phone can store multiple eSIM profiles at once, making it easy to switch between your home number and a travel data plan.
Which Phones Support eSIM?
Most modern smartphones support eSIM technology:
- Apple: iPhone XR and later (iPhone 14 US models are eSIM-only)
- Samsung: Galaxy S20 and later, Galaxy Z Fold/Flip series
- Google: Pixel 3 and later
- Others: Huawei P40 Pro, Motorola Razr, Oppo Find X3 Pro
Check your phone settings under Mobile Data or Cellular to see if "Add eSIM" is available.
Why Use an eSIM for Travel?
Traditional options for staying connected abroad — roaming, local SIM cards, portable Wi-Fi — all have drawbacks. eSIMs solve most of them:
- No roaming fees: You pay local rates instead of expensive roaming charges
- Instant setup: Buy online, scan a QR code, and you are connected in minutes
- Keep your number: Your eSIM runs alongside your primary SIM, so you keep your home number for calls and texts
- No physical swap: No need to find a SIM shop, no tiny cards to lose
Getting Started
Purchasing an eSIM is straightforward: choose your destination, select a data plan that fits your trip, and complete the purchase. You will receive a QR code that you can scan before or after arriving at your destination.
More from the blog
Best eSIM Plans for Europe in 2026
Travelling across Europe? Compare the best eSIM data plans covering multiple EU countries with one simple package.
How to Install an eSIM on iPhone: Step-by-Step
A quick walkthrough of setting up your travel eSIM on any compatible iPhone, from scanning the QR code to getting online.
eSIM vs Physical SIM: Which Is Better for Travel?
A side-by-side comparison of eSIM and traditional SIM cards to help you decide which option works best for your next trip.