Is it possible to take a sim card out of a ST that works in my area and put it in one that didn't? Would it work in my area?
if the phone is one that straight talk sells then no, the sim is locked to that phone. you would need to buy the byod sim.
the only phones that have sims that can be moved to different phones are the three nokia smartphones
nokia e71, nokia 6790, and nokia e5.