So have a new device coming to hopefully fix my ongoing issues. Just hoping to hear from someone who has activated a 2nd device. Do I use new sim card or my currently activated one? Do I still need to call in with 4G activation system or is it once your sim is active you just swap it to new device an power on and should be good to go? Sadly the rep I spoke with had no idea since it was a new system ..big suprise I know right.