AT&T, Sprint, and Verizon have announced that they are now carrying the LTE iPad mini. Sprint is warning people that launch stocks may be limited; if a store is out of the device, though, the carrier is offering people reservations contingent on buying a $50 gift card that counts against the tablet's price. In terms of plans, Sprint is selling month-to-month options ranging from $15 for 300MB up to $80 for 12GB, or discounts for current smartphone subscribers valued at $10 for 100MB or $15 for 1GB. Activations fees are being waived for all of the carrier's tablets.