is the 4G lite playbook available in canada and if so, is it unlocked, so that we can travel with it and change the sim card and where can we buy it? we have a bb 8350 on cdma just bought in spring 2012 and i understand if we change sim card, we will lose the grandfathered data plan we have . we needed to maintain cdma network to stay with grandfathered data plan. we also do not want to buy another cellular plan for the 4G lite playbook but just use wifi or alternatively sync it with 8350 bb when in canada for cellular network etc. the objective is to get a new sim card as we travel out of country so that we have mobility of using sim cards as we travel. is this all possible. thank you.