It might be because the mobile browser did not support the media elements of the HttmL5, so the mobile browser could not display the full content of the web page. In this case, you can try to use another browser or use some tools to extend the functions of the browser, such as the extension of Chromeor the extension of FireFox. It could also be because the mobile phone's browser version was too low or there was a problem with the browser's buffer, causing the mobile phone's browser to be unable to display the full content of the web page. In this case, you can try to clear the browser's buffer or update to the latest version of the browser. If the above methods can't solve the problem, you can try to modify the CSS style sheet on the web page to make the content of the web page fully displayed by modifying the style of the media elements.