Yesterday I celebrated the arrival of my LTE iPad mini. It's even lighter and more portable than I had imagined — and just what I wanted. Today the iPad mini became available in Verizon, AT&T, and Sprint stores as well as other retail outlets in the U.S. Sprint did warn, however, that supplies were limited. If Sprint runs out, and if you want to be first in line on their waiting list, Sprint is offering the option of selling you a $50 gift card in order to put you on the list. Then when you buy the mini, they'll apply that $50 toward the price.