What's the difference between the blue background and the green background of Apple SMS?

The difference between imessage with blue background and ordinary SMS with green background in Apple SMS is as follows:

1, using software

Imessage: imessage software for Apple's mobile phone.

Ordinary SMS: SMS application using mobile phone.

2. Do you need contacts?

Imessage: wifi or mobile data network is required.

Ordinary SMS: No need to surf the Internet.

3. Is it free?

Imessage: Sending information is free.

Ordinary SMS: Free of charge within the number of SMS messages per month, and 0. 1 yuan per SMS after monthly subscription.

Extended data

Advantages of imessage over ordinary SMS:

1. You can send photos or videos.

With iMessage, you can send and receive messages with any Mac user who uses iPad, iPhone, iPod touch or Mountain Lion, as well as send photos, videos, location information and contact information. If you have more than one Apple device, iMessage can keep an uninterrupted conversation on all devices.

You can send photos and videos to other mobile phones through the Internet. You can even ask Siri to text you. Just say "Tell Xiaoli I'm on my way" and Siri will help you write and send messages.

2. Free mass sending

You can send a message to one person alone, to many friends at the same time, and attach your favorite photos, videos or links. Because iMessage is used, every message sent through WLAN is free.

3. Delivery and receipt

IMessage can tell you whether the message has been delivered, and if the receiver has enabled the read receipt, you can also see the read receipt message of the message. When someone is replying, iMessage can also display status information so that you can continue the conversation naturally and smoothly.

Step 4 use a blue background

On the iPhone, when the text bubble is blue instead of green, it means that you are using iMessage instead of SMS.