AT&T has long had a chip on its shoulder when it comes to video chat apps running on its network. It took a few years to enable Apple's solution, but Android users were stymied just last week when the new Hangouts app refused to connect to video calls over AT&T's 3G and 4G. The rationale the carrier is using to justify its decision is incredibly convoluted, to say the least. However, things are going to change in the second half of 2013.
The most noticeable addition in the latest version is that users can now hold 4-way video calls right from their phones, taking advantage of fast Wi-fi and LTE connections to display multiple video streams all at once. This gives the service a big advantage against competitors such as Skype, which only allows free users to chat with one person at a time.