How to cancel sending iphone6s SMS?

1, open the home screen of Apple's mobile phone, then click Settings-Info -【iMessage, and drag the slider box. Blue indicates that the right side is open. Touch Receiving Mode to set the contact address of iPhone and enter the correct Apple ID.

2. After opening the iMessage service, enter the text interface and enter the email content. If the other party also opens iMessage, the mobile phone can automatically convert it into iMessage and send it, and the content will be displayed in blue.

[Settings]-[Message ]-[iMessage], drag the left side of the slider box to turn off instant chat.