The Google+ Android app has continued to evolve at a rapid pace. Back in September, Google added the functionality to be able to join a Hangout from any Android phone running Android 2.3 and up. One of the biggest frustrations, however, was not being able to initiative a Hangout from your mobile device. Google has finally brought that ability to the app by allowing you to start a Hangout from Messenger. If you've started a a Messenger group, you'll now see a camera icon that will initiate a Hangout with a simple tap.
Great features just keep coming. Google announced on their blog post that the app will update in the next few days, so keep your eyes out. They also announced that similar functionality will be brought to iOS so you'll be able to Hangout with your family and friends even if they have iPhones and iPads.
If you don't yet have the Google+ app, please find links to the free app after the break.
Source: Official Google Blog
