How to use iMessage when Apple sends messages to Apple?

1. When the iPhone is disconnected from the Internet, information will be sent by SMS. The operation of disconnecting the network is to turn off WiFi when connecting WiFi, and turn off cellular network when using cellular network. If you want to send iMessage, you need to connect to the Internet. Any disconnected network system will automatically send information via SMS.

2. First click the "Settings" icon on the desktop of iPhone7, as shown in the figure. After entering the phone setting interface, select the "Information" option from the drop-down menu, as shown in the figure. Then turn off the switch in the "iMessage" column in the information interface, so that you won't use iMessage when sending text messages.

3. Open the setting icon of the mobile phone, as shown in the figure: Find the information option in the setting interface, and then click Enter, as shown in the figure: You can see the option of iMessage in the information setting interface, and the switch at the back is turned on, as shown in the figure: Slide left to close iMessage.

4. Open "Settings" on the phone desktop. Open "Settings", find "Information" and click "Enter". Click the Message Info button on the Info page to close. After the "iMwssage information" function is turned off, the mobile phone receives "SMS".

5. First, open the settings of iPhone. After entering the settings page, scroll down, find "Information" and click. Then close the iMessage Info button.

6. Turn off iMessage in the settings of the mobile phone, and the message sent later will not be iMessage.