GlobaleSIM offers eSIM plans for Tonga that include a phone number and SMS capability. The plans range from 1 GB to 20 GB of data, with validity periods from 7 days up to 30 days, and prices from $7.00 USD to $75.00 USD. Each plan provides a phone number with dialing code +1, allows inbound and outbound voice calls, and supports inbound SMS only. Travelers who need specific call or messaging features should confirm the details directly with GlobaleSIM.