What is an eSIM?
An eSIM is a SIM card already built into your phone. Here is how it works.
4 min
A SIM card without the plastic
An eSIM (embedded SIM) is a chip built into your device. Instead of swapping a card, you download a profile from a provider. That profile decides which network you use and which data bundle you get.
Because nothing has to be shipped, you can buy and install a travel eSIM at home and activate it the moment you land.
Why travellers use eSIMs
You keep your own number active for WhatsApp and SMS and use the eSIM for data only, which removes roaming charges outside your home region.
An eSIM connects to local networks in the country you are visiting, so you get normal local speeds instead of throttled roaming data.
What to check before you buy
Look at three things: how much data, how many days of validity and which network. A cheap 1 GB bundle valid for 30 days costs more per GB than 10 GB for 15 days.
Always compare price per GB, not just the total price. Every destination page on esimdatabase.com sorts by price per GB by default.