I opened a new line to get the iP5 and will be putting a dumbphone on it and the iP5 on mine. How does the SIM switching work? I know being an Apple product there can't be an accessible slot, so does it need taken to Apple to make the switch? Will they charge for the nano SIM? I know Verizon gives SIMs away free but as of yesterday they didn't have the nano listed on their site to ship. TIA!