Android and Apple's iOS rule the roost, but a bevy of others gun for the number three slot.
Articles about Mobile OS
Microsoft is releasing Cortana, its personal digital assistant for Windows Phone, in beta in China and the U.K., and in 'alpha' form in Australia, Canada and India.
After sitting at around 1 percent or less of marketshare in many major markets around the world, the Kantar Worldpanel has decided to stop counting BlackBerry as a separate line item, and lump it into the Others category.
The automotive giant seeks to ditch its trusty BlackBerry devices in favor of iPhones, as part of a "global deployment" for its employees.
Microsoft is rolling out new OneNote features for iPhones, iPads and Macs, as well as first steps on the promised support for OneDrive for Business for Macs.
Faster growth in the Middle East, Africa, and Latin America saw the company's shipments rise year-over-year by 62 percent, but Western markets still shy away.
Does Tizen have a future, or is it going to be another unlaunched Linux-based mobile operating system?
Amazon's Fire Phone has the design quality you might expect from Apple's iPhone, or Samsung's Galaxy S5. It's a strong contender in the Android space, even if it misses a few enterprise targets.
The Fire Phone has one flagship feature: a display with three-dimensional aspects. Other software elements in the retail giant's debut smartphone are gimmicky at best. This device feels like a work in progress.
It's the Android-rival mobile operating system that never was. At least for now, anyway.
We could not live without our mobile phones and texting, according to Ofcom's latest survey of consumer habits.
Microsoft is making Skype available on Amazon's Fire phone, making good on the company's commitment to provide its productivity tools on all mobile platforms.
Is Microsoft building a single version of Windows that will run on phones, tablets, PCs and gaming consoles? Nope. Here's a refresher as to what really is happening.
Rotten or patchy broadband signal at home or at work could be a thing of the past if Vodafone's Open Sure Signal project can prove its worth.
When you look at the raw dollar numbers, the Chromebook wins over the Mac in the lab scenario.
The day after Microsoft's announcement that it will lay off 18,000 employees, more specifics are coming into focus, including information about what's happening in the Operating Systems Group.