iRoamly does not provide an eSIM for Switzerland that includes a phone number or SMS capability. Travelers purchasing an iRoamly eSIM for Switzerland will receive only data. They can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection for calls and messaging, but access to those apps can vary depending on local restrictions, so users should confirm that the services they need are available in Switzerland before making a purchase.