This week's tip is for users of Google Hangouts on Android. When you're in a group chat, there is a simple and quick way to mention someone. Just tap and hold on the person's photo in the chat, and it will automatically add in their username to address them specifically.
Since the Hangouts app is Google's solution to texting now, this trick should come in handy to nearly every Android user. It will save you some time and make it easier to figure out who someone is replying to in the conversation.