Got a Verizon iPhone 5 on launch day and plan to use it as my primary phone most of the time. In the past whenever I go on vacation, I would always activate one of my older phones and leave the newest one at home due to paranoia of losing it or getting robbed. All my recent phones were 3G, so this was really easy to do. With the 5 having an LTE sim card, can I still do this and occasionally activate my 4S for a week at a time and then switch back to the 5? I heard with other 4g phones, once you deactivate them, the sim becomes useless and you have to get a new one. Is the 5 the same way or can I keep activating the same sim card?