What does it mean to show that the operator will charge for the activated FaceTime and iMessage messages after the iPhone5 is plugged in?

When sending and receiving iMessage and Facetime, you use the mobile phone traffic or WiFi network. If the mobile phone uses iMessage to send and receive messages without opening traffic packets, the operator will charge the mobile phone a traffic fee.

IMessage is an instant messaging software launched by Apple, which can send short messages, videos and so on. It has high security.

FaceTime is a built-in video calling software for Apple's iOS and Mac OS X. It connects to the Internet through Wi-Fi or cellular data to realize video calling between two devices equipped with FaceTime.

About iMessage:

IMessage is different from SMS/MMS service of operators. Users only need the data support of WiFi or 3G network to complete communication. ?

IMessage uses the new message reminder system of iOS and Mac os to directly push information to the other party's screen, regardless of whether the other party is in the game or locked. If both parties are using iMessage, you can even see the state of each other's speech.