As someone who loves reading novels, I can't directly access the internal functions of the USB browser or other software. However, according to my knowledge of online literature, there may be several reasons why the UA browser cannot comment and like in the sina news: 1. Browser version restrictions: Some browser versions may not support advanced features such as comments and likes. You can try to upgrade to the latest version of the Universal browser or use another browser. 2. Internet connection problems: If the network connection is unstable, the browser may not work properly, including the comment and like functions. You can try to connect to the network again or change the network environment. 3. Browser settings: If the browser has set restrictions or prohibited certain functions such as ad blocking or access control, it may cause the browser to not work properly. You can try to adjust your browser settings or unrestrict certain functions. If the above methods cannot solve the problem, you can try to contact the customer service of the Universal browser or consult the experience of using other browser.