Question: what is the difference between ipad mini 1 2 3 and 4?
Answer: The Mini 4 is lighter than its predecessors (0.65-0.67 pounds vs. ... The Mini 2 and 3 still support Bluetooth 4.0, but the Mini 4 is a bit more future-proof with Bluetooth 4.2. WiFi on the Mini 4 is roughly three times faster than on the Mini 2 and 3, thanks to ultrafast dual-band 802.11 ac WiFi.