Review: iPad Mini 4

Introduction and designIt's hard to work out what Apple's up to with its iPad range. You'd have said that the mini selection of tablets was being retired after the mini 3 got the minimum upgrade possible… but then the iPad mini 4 was quietly rolled out.And it's actually rather good. OK, you can easily argue that it's the tablet the mini 3 should have been, and there's an infuriating drop in spec compared to the iPad Air 2 (the mini 2 and the iPad Air were almost identical except in size,