Three ways to get data abroad: turn on roaming, buy a local SIM, or install an eSIM. Here is the honest comparison so you can pick the cheapest, least stressful option.
Roaming with your home carrier
Pros: nothing to set up — it just works. Cons: it is usually the most expensive option by far, and “travel passes” can quietly add up to a nasty bill. Best only for very short trips where you barely use data.
Buying a local SIM at your destination
Pros: cheap local rates. Cons: you have to find a shop, often show ID, swap out your home SIM (and risk losing it), and you change your number — so people can’t reach you as usual. It also eats into your first hours at the destination.
Using an eSIM
Pros: local data prices and zero hassle. You buy online before you travel, get a QR code by email, and scan it to install. You keep your home number for calls and texts because the eSIM runs alongside your normal SIM. Cons: your phone needs to support eSIM (most phones from 2018 onward do).
The bottom line
For almost every traveler with a recent phone, an eSIM wins: you get the low prices of a local SIM without the airport queue, the SIM swap, or the changed number — and without the shock of a roaming bill. Set it up before you leave home and you are connected the second you land.
