All iPad Pro models, iPad (6th generation), iPad (5th generation), iPad Air 2, iPad mini 4, and iPad mini 3 models with Wi-Fi + Cellular can use either the Apple SIM card or a carrier-supported nano-SIM card. The 12.9-inch iPad Pro (2nd generation), 10.5-inch iPad Pro, and 9.7-inch iPad Pro include an embedded Apple SIM card. iPad Air, iPad mini 2, and iPad mini models with Wi-Fi + Cellular use the nano-SIM card.
More information on iPad support for LTE networks by carrier and country or region