1. Look for a sim card tray on the side to quickly tell if it is cellular enabled. 2. Go to Settings > Cellular. If you do not see cellular under WiFi and Bluetooth, it is not cellular enabled.
WiFi Only, WiFi + Cellular
Go to Settings > General > About > scroll down till you see Capacity.
16 GB, 32 GB, 64GB
Click on each condition to determine what condition your device is defined as.
Flawless, Good, Fair, Broken, No Power