I have personally seen atleast 20 iphones (family and friends) progressively slow down over each iOS update. I'd challenge anyone to take an iPhone 4S, for exa

I have personally seen atleast 20 iphones (family and friends) progressively slow down over each iOS update. I'd challenge anyone to take an iPhone 4S, for example, with iOS 5 vs iOS 9 and tell me they're equally fast. Whats worse is Apple intentionally blocks you from going back to the 'factory state' on a device you paid hundreds of dollars on. >When iPad sales slump, one explanation is often that everybody's old iPad is still working great and people have no reason to upgrade. Yes, that sounds about right.