Messaging apps were the hottest, jumping by more than 200 percent in usage, according to analytics firm Flurry.
The company has not officially decided to adopt a standalone direct-messaging app, but the feature will at the very least become more prominent in its current service.
According to new data, 19 billion chat messages were sent each day last year, compared to 17.6 billion SMS messages.
Verizon becomes the latest carrier to offer an early upgrade plan, Netflix makes Emmy history, and the HTC One shrinks to a Mini version.
Whatever your reason to seek out a Wi-Fi calling app, this handful rises to the top.
Microsoft's call app increased its traffic in 2012 by twice the amount of all international phone carriers combined -- it's calls are now equal to one third of all global phone traffic.
The messaging app, which now has 50 million users in total, is rolling out new versions for both Android and iOS.
When you need to save a little cash, try an alternative to SMS.
A popular messaging app tries to up the competition by adding a way to share videos, drawings you create, and more.