Ok so im on my 3rd TB replacement so i hopped over to my DX, when i was programming my DX the pre-recorded message said that my sim card would deactivate after 90 if it was not re-activated ( well something like that) so i wish to hop back over to my TB of course you cannot do the *228 so i call vzw, now they tell me once you go back to a 3g device you cannot re-activate your 4g phone with the same sim card! what a crock of ISH! after 2 csr's and once tech support and one tech from the so called 4g dept they could not re-activate my tb until i get a new sim card! this is bs! does anyone know if there is another way to activate it?