yaySIM does not offer an eSIM for Zambia that includes a phone number or SMS capability. Travelers can only purchase a data‑only eSIM plan for Zambia from yaySIM, and no plan includes inbound or outbound voice or text messaging.
For voice and messaging needs, travelers typically rely on VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. These services may or may not be blocked or restricted in Zambia, so it is advisable to confirm whether the applications used are accessible in the destination before buying a plan.