How to switch between imessage and SMS on Apple's mobile phone?

The method of switching from imessage of Apple mobile phone to SMS;

First open the "Settings" application on the main screen of Apple's mobile phone;

Find the "Information" column in the setting list, and click Enter;

Then click the switch on the right side of iMessage in the information list to close it.

After iMessage is turned off, it will not affect the normal information sending and receiving of our mobile phones.

So, how can you send ordinary text messages when your friends have opened iMessage? After sending the information to be sent, press and hold the sent information, and a selection box will pop up, and you can choose to send it as ordinary information.