Simply put, Google Hangouts is awesome. It’s seamless, it’s cross-platform, and it works really well. At least, it works well so long as you’re not on AT&T’s mobile network. Unfortunately, if you try to video chat when you’re using AT&T’s network, it won’t work. According to AT&T officially, video chatting will work on their network with any app that isn’t preloaded, but it’s up to manufacturers to make sure their apps work on AT&T’s network. That’s kind of a loophole exception, because Google Talk is a preloaded app but Hangouts has to be downloaded from the Play Store… Overall, not exactly a consumer-friendly move. Regardless, don’t try video chatting over AT&T’s network in the near future. We’ll be sure to keep you updated if they change their stance on the matter.