yaySIM does not offer an eSIM for Slovakia that includes a phone number or SMS service. Travelers who need connectivity in Slovakia can only purchase a data‑only plan from yaySIM.
With a data‑only plan, VoIP services such as WhatsApp, Telegram, and iMessage can normally be used for calling and messaging. However, some destinations may restrict access to specific apps or VoIP services, so users should verify that the apps they rely on work in Slovakia before buying a plan.