Why are the colors of Apple SMS bubbles different?

Apple's SMS bubbles are displayed in two colors, one is green and the other is blue.

The displayed short messages are green, indicating that the short messages belonging to traditional operators, that is, the three major operators-China Mobile, China Telecom and China Unicom-generally charge according to the number of short messages. There is no limit to the sending of this short message, and it can be used regardless of the mobile phone model.

The short message displayed is blue, indicating that this is a service that Apple provides for its own devices to send information through the network for free, that is, iMessage information, whether using wireless network or mobile network.

Next, let's talk about how to set the short message display bubble to blue in a few simple steps.

Step 1: Click "Settings" on the desktop.

Step 2: Find "Information" in "Settings" and click.

Step 3: After entering, find "iMessage" and open it.

The setup is completed, but only when the other party is also using an Apple mobile phone and the "iMessage" service is turned on can they send free messages to each other or send messages between "iPod Touch, iPad and Mac".