yaySIM does not provide eSIM plans for Kosovo that include a phone number or SMS capability.
The available plans are data‑only, allowing travellers to use the kit with internet‑based services. Popular VoIP applications such as WhatsApp, Telegram, and iMessage can generally be used over the data connection to make calls and send messages; however, some destinations may block or limit access to certain apps, so users should confirm that the services they need are reachable in Kosovo before purchasing.