Bordersim does not provide eSIM plans for Tonga that include a phone number or SMS capability. All Northern Oceania eSIM offerings from Bordersim are data‑only, meaning you will receive only internet access without local call or text services.
Without a local phone number, travelers can still communicate using VoIP applications such as WhatsApp, Telegram, and iMessage over the data connection. However, some destinations may block or limit certain apps or VoIP services, so it is advisable to verify that the apps you rely on are accessible in Tonga before purchasing an eSIM.