What do online, offline, invisible, mobile online and offline mean in mobile QQ?

Online means that others can see you and others can chat with you when they see you online. Offline means that you are not online. If you are not online, others cannot find you on QQ. You cannot find others. Invisible means that you are on QQ. You are online but others cannot see you. You can see others on QQ. Mobile online is you. SMS mobile online refers to a service provided by QQ Tencent to netizens. SMS mobile online is a unique QQ online status. When you are not logged in to the QQ client, if you set up mobile online, your avatar on the QQ client's friend list will light up, and your friends can see you and chat with you. The chat information will be sent to you via text message. Reply to the text message. You can chat with him directly. At the same time, after setting up mobile online status, you can still get active days even if you are not logged in to the client. For mobile online status to take effect, you need to set a time period. For example, if you set mobile online from 10 to 12 o'clock in the morning, then if you do not log in to the QQ client during the time period from 10 to 12 o'clock, your avatar on the QQ panel's friend list will change. Lit; if it is not during this time period and you have not logged in to the QQ client, your avatar on the friend list of the QQ panel will still be gray and will not lighten. SMS mobile online means that the other party is not online through a mobile phone or computer client. For example, your friend may put the phone in his pocket. This is completely free.