Hi. I have a jaibroken 4s. My primary reason for the jb despite a few great tweaks is to be able to tether when I travel. I'm very tempted to get the 5and wait out the jb. I would like to keep my 4s and b able to use it when I travel. The question is how easy is it to switch activation between the two ? Is it easy? Done thru sprint website or iTunes? Any help is appreciated. Thanks