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 with an activated account 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. The 12.9-inch iPad Pro (3rd generation) and 11-inch iPad Pro support eSIM. iPad Air, iPad mini 2, and iPad mini models with Wi-Fi + Cellular use a carrier-supported nano-SIM card.
There are two Apple Pencil models. The original Apple Pencil is compatible with the 12.9‑inch iPad Pro (1st and 2nd generations), 10.5‑inch iPad Pro, 9.7‑inch iPad Pro, and iPad (6th generation). Apple Pencil (2nd generation) is compatible with the 12.9‑inch iPad Pro (3rd generation) and 11‑inch iPad Pro.
Available space is less and varies due to many factors. A standard configuration uses approximately 10GB to 12GB of space (including iOS and preinstalled apps) depending on the model and settings. Preinstalled apps use about 4GB, and you can delete these apps and restore them.