One of the coolest things about Android is how flexible and
customizable the platform is. You can replace practically any part of
the system with a third-party alternative; you're never stuck using
something just because that's the way it ships.
Windows Phone is yet to become the game changer Microsoft wants
it to be. It didn't quite experience the kind of explosive growth that
could've put Nokia back in pole position, but it has been steadily
climbing up the ranks. Maybe an upgrade of the scale of its 8.1
version is all it needed to go into overdrive and really challenge the
big two in the smartphone game.