yaySIM does not offer any eSIM plans for Tunisia that include a phone number or SMS capability. Travelers can purchase data‑only eSIMs from the provider, but no telephony services are provided. Because no phone number is supplied, calls and messages cannot be sent through the carrier network. Travelers who need to communicate may rely on VoIP services such as WhatsApp, Telegram, or iMessage over the data connection; however, these are not guaranteed to work in all destinations, so users should check whether the apps they need are accessible in Tunisia before buying a plan.