How to install an eSIM: a plain-English walkthrough

If you've never installed an eSIM before, the whole idea can sound more technical than it actually is. There's no physical card, no tray to eject with a paperclip, and no shop visit - it's a profile your phone downloads and stores, the same way it downloads anything else. The process itself takes a couple of minutes; most of the confusion people run into is about timing rather than the steps themselves.

The short version

Buy a plan, get a QR code by email, scan it in your phone's cellular settings to install the profile, then switch it on and turn on data roaming for that line once you've actually landed. That's the whole process. Everything below is the detail behind each of those steps, and the handful of things worth getting right so it works the first time.

First, check your phone actually supports it

Most phones from the last several years support eSIM, but not all - and critically, some phones sold in specific countries or through specific carriers have eSIM disabled even on hardware that technically supports it. The safest way to check is to look in your phone's settings for a "add eSIM" or "add cellular plan" option before you buy anything - if it's there, you're set. If you're not sure, a quick search for your exact phone model and "eSIM compatible" will confirm it in seconds.

Then, install it - but not too early

After buying a plan, you'll get a QR code by email. Installing it is a matter of opening your phone's cellular settings, choosing to add a plan via QR code, and scanning it - your phone handles the rest, and it only works once per code. Do this on wifi, since it's a data-based process itself. The one thing worth knowing: installing the profile is not the same as activating it. Installing just stores it on your phone, ready to go; nothing starts running, and nothing gets charged against your data, until you actually switch it on.

Why the timing question matters

This is the detail that trips people up: for a regional plan, the validity window starts from your first connection to the network, not from the moment you install the profile or even from when you bought it. That means there's no downside to installing the eSIM weeks before your trip, while you're still at home on reliable wifi with time to fix anything that goes wrong - the clock simply doesn't start until you land and switch it on.

Switching it on when you land

Once you're in a covered country, go back into your phone's cellular settings, turn on the new eSIM line, and make sure data roaming is switched on for that specific line - this is the single most common reason a freshly installed eSIM "isn't working." Your existing SIM or eSIM for your home number can stay active alongside it; most phones handle two active lines without any trouble, one for data and one that keeps your usual number reachable.

Setting your data line correctly

Once both lines are active, most phones let you choose which one handles data by default, separately from which one handles calls and texts - worth checking this explicitly rather than assuming your phone picked the right one. You want your new eSIM set as the data line for the trip, while your home line stays set for calls and texts. Getting this backwards is a common reason people think their eSIM "isn't working" when it's actually installed and active correctly, just not the one your phone is pulling data through.

If something looks wrong

A blank signal indicator for the first minute or two after switching on is normal while your phone finds and joins a partner network - give it a moment before assuming something's broken. If it's still not connecting after that, double-checking that data roaming is on for the new line resolves the large majority of cases. For anything more specific, the troubleshooting page covers the rest.

Once it's installed, it's the same eSIM across all 31 countries - see the full list on the coverage page.