RoamTheWorldCellPhones.com

Cellphone GSM Frequencies: 900/1800

(This means you will need a GSM cellphone that will work on 900MHz or 1800Mhz to use it in Hungary.)

Cellular carriers for Hungary

Magyar Telekom Plc (T-Mobile Hungary)

Frequency: GSM 900/1800
Website: www.t-mobile.hu

Coverage Map (NONE)

Pannon GSM Telecommunications

Frequency: GSM 900/1800
Website: www.pannon.hu

Coverage Map

Vodafone Hungary Ltd

Frequency: GSM 900/1800
Website: www.vodafone.hu/egyeni/english/akciok/akciok_en.html

Coverage Map (NONE)

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