Core Viewpoint - The return of the back screen in the smartphone market, particularly as a key feature of the Xiaomi 17 Pro series, is unexpected and indicates Xiaomi's strong expectations for this technology [1][3]. Group 1: Back Screen Technology - Xiaomi has invested significant resources into the "Miao Xiang Back Screen" feature, with development and manufacturing costs reaching 1 billion yuan, making it challenging for other brands to follow suit [3]. - The back screen is not a new concept in the smartphone market, as it was first introduced by Meizu in 2017 with the "Intelligent Window" design [5]. - Previous attempts by various manufacturers, including Meizu and Xiaomi, to implement back screens were not successful, leading to a decline in interest in this feature [5][7]. Group 2: Market Position and Differentiation - The functionalities offered by the back screen in the Xiaomi 17 Pro series, such as personalized wallpapers and notifications, could also be effectively managed by the main screen, raising questions about the necessity of the back screen [5][7]. - The introduction of the back screen may be more about creating product differentiation rather than addressing high-frequency user needs or efficiency improvements [7]. - While the back screen provides some unique features for the Xiaomi 17 Pro, it is unlikely to achieve the same level of innovation and market impact as Apple's Dynamic Island, which effectively addressed user interaction challenges [10]. Group 3: Future Outlook - There are concerns that the back screen design may not achieve lasting success and could become a fleeting trend, similar to the previous back screen attempts by Xiaomi [11]. - Xiaomi's software director has assured users that the back screen will not be removed in future iterations, indicating a commitment to this feature [11]. - The market's acceptance of the Xiaomi 17 Pro series will ultimately determine the success of the back screen, with the product being perceived as having good value for money due to its strong battery life and imaging capabilities [11].