Which Slovenian network does the eSIM use?

The ETravelSim Slovenia eSIM runs on A1 Slovenia (originally branded as SI.Mobil before the 2017 rebrand following its acquisition by Telekom Austria's A1 Group). A1 is one of Slovenia's four major mobile networks alongside Telekom Slovenije, Telemach, and T-2, and was independently rated as Slovenia's fastest 5G network in 2024 by Opensignal at 292.9 Mbps. For city travel and main tourist destinations, A1 covers the routes most travelers actually take.