eSIM-On Shop does not provide any plans that include a local phone number or SMS capability for customers traveling to Kazakhstan. Only data‑only eSIM plans are available from this provider. Users relying on voice or messaging can still use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection; however, some destinations may block or restrict certain apps or VoIP services, so travelers should verify that the services they need are accessible in Kazakhstan before buying a plan.