There are essentially two classes of Windows: Windows Phone for smartphones and the regular Windows for tablets, laptops and desktops.
The two are starting to merge, but true unification hasn't arrived yet. For instance, you can customize the phone's People app so it tracks news feeds from your favorite social networks, but when you go to People on a tablet, you need to set that up again, even though Microsoft's OneDrive storage service promises to sync all your devices.
In that sense, Windows Phone remains a work in progress. It incorporates plenty of great ideas, which I'm sure will work seamlessly one day. Likewise, as usage grows beyond the 3 percent worldwide market share it had last year, more apps will follow.
There's no need to abandon your iPhone or Android phone yet, but Windows Phone is worth watching as it develops.
