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 San Marino.)

Cellular carriers for San Marino

San Marino Telecom Spa

Frequency: GSM 900/1800
Website: www.smt.sm

Coverage Map

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