BASICS
What Is an eSIM?
Here you will find all the raw data from my Switzerland eSIM test in one place: the plans I bought and every individual speed test measurement across all four locations for all five providers tested (Airalo, Holafly, Nomad, Revolut, Saily). No rating, no weighting, just the numbers exactly as measured. Every individual measurement includes a public Ookla share link so you can verify it yourself. You can read how I test on the [link methodology page]. My assessment and interpretation are available in the [link individual reviews].
Important context: this is a one-off measurement from one day, at four locations, with five providers, not an ongoing benchmark or a statistically representative study. Network quality varies by location, time of day, network load, and device. The outlier in Romanshorn, up to 529 Mbps, makes that clear: individual measurements can vary significantly. These numbers are an honest snapshot, not a promise of what you will get on your own trip.