Giga.Tel does not offer an Angola eSIM plan that includes a local phone number or the ability to send or receive SMS. The provider’s Angola offerings are strictly data‑only, so travelers cannot make traditional calls or receive text messages on a local number. However, international VoIP applications such as WhatsApp, Telegram, and iMessage can usually be accessed over the data connection for voice and messaging, though availability may differ, so users should verify whether those services work in Angola before purchasing.