yaySIM does not offer a Greenland eSIM that includes a local phone number or SMS capability. Currently, all plans from this provider for Greenland are data‑only, so travelers cannot receive or make regular phone calls or SMS via the eSIM.
For voice and messaging, users can rely on VoIP applications such as WhatsApp, Telegram, or iMessage, which work over the data connection. However, some destinations may block or limit certain apps or VoIP services, so travelers should check the accessibility of the services they need before purchasing a plan.