RoamTheWorldCellPhones.com

Cellphone GSM Frequencies: 900

(This means you will need a GSM cellphone that will work on 900MHz to use it in Tonga.)

Cellular carriers for Tonga

Digicel (Tonga) Limited

Frequency: GSM 900
Website: www.digiceltonga.com

Coverage Map (NONE)

Tonga Communications Corporation (UCALL)

Frequency: GSM 900
Website: www.tcc.to

Coverage Map (NONE)

If you've used either of these networks or roamed in Tonga, please post about your experience and the cost. Feel free to ask questions.