After the iphone upgrade, it is free to send text messages between iphone users, and is it free to send text messages between foreign iPhones and domestic iPhones?

It's free to send messages to each other with iAge. If the message sent by iAge cannot be delivered, it will be automatically converted into a message with normal charge. Be careful!

1, 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. The most commendable thing is that the security of iMessage is so high that it is said that it is difficult for even the FBI to decrypt the information in Message.

2. The difference between 2.iMessage and SMS

When many friends send text messages on Apple phones, they sometimes find that the content in the text box will be marked with "blue", while some text messages will be marked with "green".

A. When sending, the content is marked in blue, indicating that the short message content is being sent in the form of iMessage.

B, when sending, the content is marked in green, and the display screen shows that it is sent by ordinary SMS.

* Note: The most important thing is that iMessage does not need to send short messages, but only needs traffic charges (such as GRPS cellular or wifi status), but when sending content in iMessage mode, the other party needs to open iMessage service at the same time.

3. How to set up iMessage service:

1. Open the main screen of Apple's mobile phone, then click Settings-Info -iMessage, and drag the slider to the right. When it is displayed in blue, it will be turned on. Touch the receiving method to set the contact address of the iPhone and enter the correct Apple ID.

2. After opening the iMessage service, enter the SMS interface and enter the SMS content. If the other party also turns on iMessage, the phone will automatically switch to iMessage mode to send, and the content will be displayed in blue.