What is an eSIM?

An eSIM is a SIM card built into your phone. Instead of sliding a plastic card into a tray, you download a mobile plan straight to the device. The "e" stands for embedded. Most phones released since 2019 support it, including recent iPhones, Google Pixels and Samsung Galaxy models.

How it differs from a physical SIM

A physical SIM is a chip you swap by hand. An eSIM is a profile you install from a QR code or an app, usually in a couple of minutes. You can store several eSIM profiles at once and switch between them in settings, so your home number stays active while a travel plan handles data abroad.

Why travellers use them

You buy a local or regional data plan before you land, install it over Wi-Fi, and arrive with working data. No hunting for a SIM kiosk, no roaming charges, no swapping your home SIM out and losing your number. When the trip ends you delete the profile.

What to check before buying

Confirm three things: your phone is eSIM-capable, it is carrier-unlocked, and the plan covers the countries you're visiting. Data-only eSIMs (the most common travel type) give you internet but not a local phone number — fine for messaging apps, maps and calls over the internet.

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