IPad mini 4

The iPad mini 4 was released in September 9 2015, when they had the hey Siri event. The iPad mini 4 replaced the iPad mini 3 after iPad mini 3 was discontinued on the same day it was released. It is a bit bigger than the other iPad mini models, and had to get different microphone locations too. It was unfortunately discontinued in March 2019 and replaced by the iPad mini 5.