GigSky does not provide eSIM plans for Macau that include a local phone number or the ability to send SMS. Travelers can only purchase data‑only plans from the provider. For voice or messaging, users can rely on VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but access to these apps is not guaranteed and a destination‑specific restriction may apply. Users should verify app availability in Macau before purchasing a plan.