The difference between green and blue when sending messages on Apple mobile phone.

Short messages with green background are short messages that we send every day through operators' mobile, telecom and China Unicom. Short message with blue background is a service launched by Apple, which can send messages, namely iMessage messages, for free through WiFi or cellular data network.

1, Apple's iMessage service provides users with two major benefits, one is that they don't have to pay the SMS fee to the operator, and the other is that users can experience more SMS functions, such as sharing geographical location, sending intercom language messages, checking the sending status of messages, and even checking whether the other party is returning messages to you.

2. Blue SMS is a service provided by Apple for iOS devices, which can send information for free through the network, namely iMessage information.

3. Use iMessage, whether using wireless network or mobile network. When using iMessage, the other party must also be an Apple product, such as iPad, iPhone and Mac.