Is there a difference between the green and blue of Apple SMS?

The messages displayed in green belong to the messages of traditional operators, that is, they are generally charged according to the number of messages.

The following figure explains the short messages of traditional operators, namely, China Mobile, China Telecom and China Unicom. You can also see the prompt with the words "SMS/MMS" in the SMS text input box.

The background color is blue text messages. In fact, this is a service provided by Apple for its own devices, which sends information through the network for free, that is, iMessage information, whether using wireless network or mobile network.

First, you must use Apple iPhone to open the iMessage function service in Settings-Information.

In addition, the other party also uses Apple's mobile phone. After opening the iMessage service, they can send free messages to each other.

You can not only send text for free, but also send pictures and videos. Compared with traditional SMS, Apple's iMessage information has more advantages, not only for free, but also for sending videos.

When you encounter network signals from time to time, there will be a problem that information cannot be sent. So in the setting interface of iMessage, that is, Settings-Info, you can open it as an option to send short messages, so as not to delay the sending of information.

In addition, when sending an iMessage message, you can also switch by pressing and holding the message being sent and selecting the option to send it using the short message service.