How to directly control the subtitles of led display screen with mobile phone

1. Open the mobile app store, search for "a wooden letter" app, and then click the installation option.

2. After downloading and installing, click to open the Mu Xin application. When you open it for the first time, a dialog box will pop up and click the "Always Allow" option.

3. Enter the homepage of Muxin application interface and click the "All Applications" option at the top.

4. Then enter a new page with many button options, slide down to find the option button marked "Typepad", and then click "Enter".

5. Enter the edit subtitle content and open the setting options in the lower right corner.

6. Enter the setting page, and you can set the caption text content, caption text color and caption background color.

7. Finally, when the user has set the content and color of the required subtitles, click the "OK" button in the lower right corner.