Yes. Just buy a 7-Eleven phone and put the SIM card into your existing phone. Note that you need to have a GSM phone (one with a SIM card) and not a CDMA phone (which Telus, Bell, Virgin Mobile, and a lot of other providers use). If your phone was locked to the Rogers Wireless Canada network, then you should be able to use a 7-Eleven SIM card without even unlocking the Rogers phone.