Google just announced its biggest update to the Hangouts Android app in some time, introducing a bevvy of features not seen before on the platform. In terms of utility, the biggest addition is probably confirmed phone numbers: like competing SMS-style message services, this will allow people who know you to search for your Google+/Hangouts profile with your cell phone number. It's an addition to the app that will be particularly useful to international users, who are used to this kind of contact lookup.

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