What is the difference between the iPad Mini model numbers A1454 and A1455?
The comparable page you're looking for is: http://www.apple.com/ipad/LTE/. A1454 is used for AT&amp;T and similar Canadian networks only, while Sprint, Verizon and overseas carriers use A1455.

All bands are also listed on the specs page:


Model A1454

GSM/EDGE (850, 900, 1800, 1900 MHz)
UMTS/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz)
LTE (Bands 4 and 17)

Model A1455

CDMA EV-DO Rev. A and Rev. B (800, 1900, 2100 MHz)
GSM/EDGE (850, 900, 1800, 1900 MHz)
UMTS/HSPA+/DC-HSDPA (850, 900, 1900, 2100 MHz) 
LTE (Bands 1, 3, 5, 13, 25)