Why are there "green" and "blue" text messages on iPhone?

Why are there green and blue messages on iPhone?

If you are an iPhone user, you may have noticed a strange phenomenon in messaging applications: some information background colors are blue, while others are green. What's going on here?

In fact, the answer is simple: the blue background content is the message sent or received by users through Apple's iMessage service, and the green background content is the traditional short message received or sent by SMS.

Does it matter? On the information level, should we care whether the information is blue or green? The answer varies from person to person and from situation to situation.

First, make sure that every iPhone user can become an insider. Standard SMS messages are sent and transmitted through the same language network as when making a phone call. In previous years, operators charged according to the number of short messages (for example, a short message 10 cent). Later, the operator bundled a certain number of short messages in the user's phone bill package, that is, as long as the number of short messages sent by the user does not exceed the specified number, there is no charge. At present, most telephone packages offer unlimited SMS service.

During this period, Apple launched the iMessage service, which is similar to the standard SMS service, but the former relies on the data network (cellular or WiFi). Apple's iMessage service provides users with two major benefits: first, you don't have to pay the SMS fee to the operator; Secondly, users can experience more SMS functions.

In fact, Apple iMessage allows users to do things that standard SMS can't do, such as sharing geographical location, sending intercom language messages, checking the status of message sending, and even checking whether the other party is returning messages to you.

However, Apple's service has a flaw: iMessage service can only be used between iOS devices. If you own an iPhone, and then use the Messages application software to send short messages to Android, BlackBerry or WP users, the iOS system will default that the other party has no iMessage application, and then convert the information into SMS mode. At this point, the information is still displayed on the green background instead of the blue background.

However, even if you send a message to another iPhone, the background color is still green if the following three situations occur:

1. The iMessage service is not activated on the iPhone of the user. Users can click on the setting information and see if this function is turned on. If enabled, it can also be activated as SMS sending, so that when iMessage is not used, the information will be sent by SMS, but the SMS fee of the operator may be required. In addition, it should be noted that users need to log in with AppleID when activating iMessage service.

2. iMessage is not activated on the other device.

3. The current data network is unavailable. However, if the user's mobile phone can be connected to the language tower, it will default to SMS mode.

So, under what circumstances should users choose iMessage or SMS mode?

Although short messages are small, picture messages consume a lot of data. If the user's telephone package provides unlimited number of short messages, but the data traffic is limited, it is best to turn off iMessage and enable short messages. On the other hand, if users are texting with other iPhone users, but all they see is green background information, let them activate iMessage service on their mobile phones, so that users can experience many functions brought by iMessage.