How does Apple send imessage to iphone4?

There are essential differences between iMessage and ordinary SMS in the sending process. IMessage transmits information, pictures or voice through mobile phone traffic or Wi-Fi encryption, while ordinary short messages are transmitted through cellular mobile networks. It is also easy to distinguish in "information" applications. Messages sent by iMessage are blue bubbles, while messages sent by ordinary SMS are green bubbles.

Send ordinary short messages with green bubbles with Mac and iphone.

If you want to use the continuous message function, you need to ensure that the Mac is upgraded to OS X Yosemite, and the iOS device is upgraded to version 8. 1 or higher, and log in to the same Apple account in the information settings on the device to be used.

▲iPhone "Information"-"Settings"

Open iPhone Settings, find Messages, and then click Send and Receive with the iMessage switch on.

In "How to contact you through iMessage", at least check your mobile phone number and the email address used by Apple ID. Generally speaking, the mobile phone number is checked by default, and there is no need to make a choice.

▲Mac "Information"-"Preferences"

After opening Messages, click Messages in the upper left corner of the screen, and then continue to click Preferences ... to confirm that the Apple ID matches the Apple ID sent and received on the iPhone. If not, please select logout, and then log in to the Apple ID used by iPhone for sending and receiving. Then confirm that Enable this account is selected. Finally, at least select your mobile phone number and the email address used by Apple ID in "Your information receiving address:".

▲iPhone "message"-"SMS forwarding"

Finally, go back to your iPhone and enter Settings-Messages-SMS Forwarding. The devices with iMessage turned on and the same Apple ID as this iPhone are listed below. You can choose to turn on the SMS forwarding function of the specified device here. If the setting is successful, a confirmation message will be displayed on the iPhone.

Turning on text forwarding does not require turning on the iPhone's Wi-Fi and Bluetooth. After completing the above settings, you can enjoy the continuous intercommunication function of ordinary short messages.

How to turn off iMessage

Solving this problem is simple. For example, if you don't want to receive iMessage messages on iPone, go directly to Settings-Messages and turn off the iMessage switch.

If you are using a Mac, please uncheck "Enable this account" in preferences ... In Messages, under the Apple ID corresponding to iPhone.

After the above settings are completed, iPhone or Mac can no longer receive iMessage messages.