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 France.)

Cellular carriers for France

Bouygues Telecom (Bouygyes Telecom)

Frequency: GSM 900/1800
Website: www.bouyguestelecom.fr

Coverage Map

Orange France

Frequency: GSM 900/1800
Website: www.orange.fr

Coverage Map

SFR (SFR (Contact))

Frequency: GSM 900/1800
Website: www.sfr.fr

Coverage Map

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