RedSim does not offer an eSIM that includes a local phone number or SMS capability for Liechtenstein. The provider only sells data‑only eSIMs that provide internet connectivity, and therefore travelers cannot use traditional voice calls or receive SMS directly through the eSIM. To make voice and messaging calls, users can rely on VoIP applications such as WhatsApp, Telegram, iMessage, or similar services over the data connection. However, some destinations may block or restrict access to certain VoIP services, so travelers should verify that the apps they rely on work in Liechtenstein before purchasing a data‑only plan.