TERRAVIA
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How-to

Internet abroad: roaming, a local SIM or an eSIM

How the three options differ and what to do in advance so you are never without a connection.

Three options

Roaming
The simplest, but usually the most expensive. Look at your operator's travel packages beforehand.
A local SIM card
Often cheaper. You are asked for your passport when buying, and airport prices may be higher than in town.
eSIM
If your phone supports it, buy one online before you travel and switch it on as soon as you land.

Prepare in advance

Offline map
Download the city map to your phone: it works without the internet.
The apps you need
Install taxi, translator and banking apps at home and sign in to them.
Confirmation codes
Bank SMS codes go to your usual number. Check that it can receive SMS while roaming.

Precautions

Public Wi-Fi
On airport or café networks, do not open your banking app or type passwords.
Watch your data
While roaming, turn off background updates for apps.
Messengers
In some countries calls through messenger apps are restricted. Check beforehand.