TailSim does not provide eSIM plans for Malaysia that include a phone number or SMS capability. Travelers who need a number for calls or texts will need to rely on VoIP applications, such as WhatsApp, Telegram, or iMessage, which can usually be used over the TailSim data connection. Because some destinations may block or restrict specific VoIP services, users should confirm that the apps they rely on are accessible in Malaysia before purchasing a data‑only eSIM from TailSim.