My mini 4 was so sluggish on iOS 11, but it runs like a champ on iOS 12. Heck, my daughter’s mini 2 runs better as well. It is kind of bittersweet to think about what might hav been with a mini 5. I have a 9.7,10.5, and 12.9, but there is no other device that I rather use in bed than the mini 4..it’s perfect. Has anyone else’s noticed major improvements in their mini 4 since iOS 12?