What does the imessige information of Apple's mobile phone mean?

IMessage refers to sending information through the network. IMessage is an instant messaging software launched by Apple, which can send short messages, videos and so on. It has high security. Different from the SMS/MMS service of operators, users only need the data support of WiFi or cellular data network to complete communication. With iMessage, you can send and receive messages with any Mac user who uses iPad, iPhone, iPodtouch or MountainLion, as well as send photos, videos, location information and contact information. If you have multiple Apple devices, iMessage can keep a continuous conversation on all devices. In addition, you can send text messages, photos and videos to other mobile phones through the cellular network. You can even ask Siri to text you. Just say "Tell Xiaoli I'm on my way" and Siri will help you write and send messages.