GulfData does not provide a Tonga eSIM plan that includes a phone number or SMS capability. Travelers who purchase a GulfData eSIM for Tonga will receive only a data-only connection and will not be able to place voice calls or send SMS messages directly from the eSIM. Users who need voice or text communication can rely on VoIP services such as WhatsApp, Telegram, or iMessage over the data connection, but they should verify that these apps are accessible in Tonga before purchasing, as some destinations may restrict certain VoIP services.