I want to switch from Boost Mobiles to TMobiles $30 data plan. i also want to buy a windows phone unlocked ! but i am having much difficulty in finding such a suitable phone. seems like the only phone i can get my hands on is lumia 710 but thats a tmobile phone. which has only a 3g unlocked varient. i wouldnt suppose i could use the tmobile simchip in a tmobile lumia 710 in order to get on the $30 plan bandwagon ? So far ive searched many phones but im not finding much answers. I wouldnt want another android phone. any suggestions ?