GulfData does not offer an eSIM plan for Switzerland that includes a mobile phone number or SMS capability. The only plans available are data‑only eSIMs.
Because no phone number or SMS service is provided, travelers can still use the data connection and, if needed, rely on VoIP services such as WhatsApp, Telegram, or iMessage for voice calls and messaging over the internet. These applications generally work in Switzerland, but some destinations may block or restrict specific apps or VoIP services, so travelers should confirm that the apps they intend to use are accessible before purchasing a GulfData eSIM.