Billion Connect sells a data‑only eSIM for Sri Lanka and does not provide a local phone number or SMS capability. Travelers will therefore not receive a Sri Lanka number with this plan.
Over the data connection, VoIP applications such as WhatsApp, Telegram, and iMessage can be used for voice and messaging. However, some destinations may block or restrict specific apps or VoIP services, so users should confirm that the apps they need are accessible in Sri Lanka before purchasing.