BetterRoaming does not provide an eSIM for South Korea that includes a phone number or SMS capability. Only data‑only eSIMs are available from this provider. Travelers who need voice or messaging can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, although some destinations may block or restrict specific apps. Travelers should verify that the VoIP services they rely on are accessible in South Korea before purchasing.