That's also true of the software. As a former hobbyist Windows Phone developer I saw two major reboots or overhauls of the platform in a few years (if we count

That's also true of the software. As a former hobbyist Windows Phone developer I saw two major reboots or overhauls of the platform in a few years (if we count the previous Windows Mobile system it is then 4 different OS in a small slice of time). This lead to functional regressions and Microsoft not able to came up with functional parity of concurrent platforms. On the other hand I'm amazed at how long Apple is keeping and evolving iOS and its API.