Does it cost money to send text messages on Apple's mobile phone?

System: IOS 15.4

Software version:

Normal SMS between Apple phones is charged, but after iOS 5, Apple added an iMessage function. If both Apple device system versions are above iOS5, the default way to send messages to each other is iMessage, and there is no SMS charge.

Take iPhone 13pro as an example, users need to open iPhone, find and click Settings; Enter the settings page, drop down to view the information, and click Enter; On the information page, you can see the iMessage message to open it. After the user opens it, he will send a message to the person who also opens the iMessage message, so that he will not receive the SMS money.

IMessage is an instant messaging software launched by Apple, which can not only send short messages, but also send videos, address books, location information, photos and so on. IMessage information is text, photos or videos sent to another iPhone, iPad, iPod touch or Mac through Wi-Fi or cellular data network. This information is usually encrypted and displayed in blue text bubbles.