Let’s say you land in a new country that your primary provider won’t roam to for free or at all, there’s no need to visit the airport shop that sells SIM cards with limited options and try to buy and set up something which is often in a different language.

You can buy your eSIM service at the best possible price ahead of time online and have it ready to go when you land, and you don’t have to upgrade your not-that-old phone to do so.