Huawei nova6 SMS pull-up shows an addition. What is this for?

Adding means adding the mobile phone number of the sent information, adding it if there is one, and it is unnecessary.

First, you don't need to add friends to send enhanced information, you just need to know the other person's number to send him a message.

Second, the use of enhanced information only consumes traffic and does not charge any fees.

How to open enhanced information? Actually, it's very simple: open Info, click More > Settings > Enhanced Info, and turn on the "Enhanced Info" switch.

Enhanced information

When the input box shows "Enhanced Information", you can send a message for free. As shown in the figure below, when the dialog box is blue, it means that the message is enhanced information. Click the plus sign to unlock more games.

Enhanced information

You don't need to install a chat application separately, add friends, or use the same operator (the sender is a mobile user), you can send it as long as you know the other party's mobile phone number, and the receiver's mobile phone can receive MMS normally without this function.