But is it free for countries to send imessage to each other with Apple phones?

No charge. Because IMESSAGE sends information through the network, it uses traffic.

I. Introduction to iMessage:

IMessage is a cross-device network short message service provided by Apple for iOS 5. It allows devices such as iPad and iPod Touch that are not bound with mobile phone numbers to communicate with iPhone instantly, and can send text, pictures and videos, which is basically the functional experience of SMS. As long as the iOS device is upgraded to iOS 5 and can access the Internet, you can send and receive SMS for free and unlimited through iMessage. The security of IMessage is very high.

Second, the function of iMessage:

With iMessage, you can send and receive messages with any Mac user who uses iPad, iPhone, iPod touch or Mountain Lion, as well as send photos, videos, location information and contact information. If you have more than one Apple device, iMessage can keep an uninterrupted conversation on all devices. In addition, you can send text messages, photos and videos to other mobile phones through the cellular network. You can even ask Siri to text you. Just say "Tell Xiaoli I'm on my way" and Siri will help you write and send messages.

You can send a message to one person alone, to many friends at the same time, and attach your favorite photos, videos or links. Everyone will see your reply. The more people there are, the more information you receive. Hair ecstasy! You use iMessage, and every message sent through WLAN is free. ?

When many people chat with each other, it will be very reassuring to know that the information sent has been read and received. IMessage can tell you whether the message has been delivered, and if the receiver has enabled the read receipt, you can also see the read receipt message of the message. When someone is replying, iMessage can also display status information so that you can continue the conversation naturally and smoothly.