On the surface, yes — Openline follows the local carrier partner's coverage. In tunnels, no cellular network works (this is a track-side infrastructure limit, not Openline). Some high-speed European trains have onboard Wi-Fi that carries the tunnel gaps.

Still stuck?

Reach Openline support 24/7 through any of these channels:

When you write in, include your purchase code (the OL-… code we emailed you) and, if the eSIM is already installed, its ICCID (Settings → Cellular → tap the Openline line). That's enough for us to find your plan and diagnose without back-and-forth.