
Back in 2017, I wrote quite a number of blog entries about an upcoming technology: Virtual SIMs, also referred to as eSIMs. As with many network technologies, it took a number of years before things end up in the mass market. But it has finally happened, and an interesting ecosystem has grown around downloadable SIM cards. One use case that has become popular are downloadable SIM cards which replace physical SIM cards when a subscriber of a network operator buys a new eSIM enabled device. A second use case is the convenient distribution of (temporary) prepaid roaming eSIMs, which are available these days for little money. Due to their low price, they are ideal to experiment with in practice.
Continue reading Downloading an eSIM – in Practice – Part 1