sorry , GSM is TDMA, one of PCS, in North America, got FDMA,TDMA, and CDMA in market, it can autoswitch and transferred smoothly without problem. Fido is TDMA system. Telus, Bell got both CDMA and TDMA.
the keypoint is the cellphone is as a part of service, called free under service plan, typically 25$ per month for 150min. one year contract.