Here's my controller fully opened and not touching sport switch/button:
View attachment 2145
And with Ipad mini 2:
View attachment 2146
And with ipad air 2...just for the heck of it:
View attachment 2147
Ipad Mini 2
Dimensions: 200 x 134.7 x 7.5 mm
Ipad Mini 4
Dimensions: 203.2 x 134.8 x 6.1 mm
3.2 mm's seems to be a problem with the new controllers