Hello, to download the app client, you can directly log in to the corresponding application official website to obtain the download link for downloading, or you can directly open the browser or open the mobile app store, and then enter the name of the software that needs to be downloaded. Search, and then select download and install from the search results. You can also download a market software, common ones include Android Market, Jifeng Market, etc., and then use this software to download other programs.