Before using the application, just like with other similar services such as Whatsapp or LINE, you will have to connect your phone number to a personal account, a process that will only take a couple of minutes. Once you've done this, you can see a complete list of friends who are using WeChat.
All the conversations you have on WeChat will be stored on your device in an 'offline' way meaning that only you can access them from your cellphone, nobody else.
WeChat is an alternative way to communicate, helping its users to immediately start conversations between each other. Just like other types of applications like WeChat, it’s characterized by its comfort.