Another aspect to the iOS vs Android vs Windows debate is the issue of assset depreciation. Writing again from an enterprise perspective, I wonder what the useful life of smartphones and tablets are - particularly when they can no more be upgraded or repaired. Seen from this perspective and the fact that even the oldest iPhones are capable of running the latest iOS, I would argue that an enterprise could at the very least expect an useful economic life of 2 years from an iOS device and say a salvage value of 0. For an Android device, the difficulties in upgrading would mean that it would have to be depreciated over 1 year and will have a salvage value of 0. Hence, over a 5 year period, emabrking on the Android platform will mean greater outlays than on the iOS.