I will start with some data. As of January 2021, the total population of the world was 7, 585, 200, 000. Hangouts currently has more than 5 billion downloads on the Google Play. The comparison between the world’s total population and downloads of Hangouts means that two-thirds of the people have downloaded and used Hangouts. The number is really amazing. So how does Hangouts make it so popular around the world? Hangouts is a chatting software published by Google LLC. It can keep us in touch with others anytime and anywhere. We can use it to send voice or text messages to contacts, initiate free video or voice calls, and set up groups to chat with up to 150 people. It is a very simple and practical software. It has no complex functions, but only the necessary attributes of communication. In today's market, Hangouts lacks the attribute of entertainment to some degree. But purity and persistence are quite good characters.

As an instant messaging software, the features of Hangouts are very obvious. In this age when everyone pursues commercialization, Hangouts keeps the original charm of communication. It doesn't have a variety of entertaining functions like other messaging software. It also doesn't have a cool look. It simply allows us to get in touch with others in various ways. It is a simple software like the original messaging function of mobile phones. But it also has video calls, group chats and other functions that we need. But it is free. Integrating all the communication functions of a mobile phone and making them free are its biggest features. We can enrich conversations with status messages, photos, videos, maps, emojis, stickers, and animated GIF by using Hangouts. We can turn any conversation into a free video group chat (up to 10 people) at any time, which is very convenient for business meetings or teaching meetings. We can use it to call any number in the world. It integrates the function of call, text message and voicemail into one, and we can sync our chats from any devices and send messages to our contacts at any time, even if they're not online.

Hangouts is a free software that can be downloaded and used. We can use it for free, but mobile operators and Internet service providers (ISP) may charge for it. Calls to Hangouts users are completely free, but calls to other users may incur call charges.

So far, Hangouts has been downloaded more than 5 billion times on the Google Play Store, and more than 5.2 million people give a high score of 4.1. This is a popular software around the world.