第二步：下载并允许未知来源 点击下载按钮后，设备可能会提示你允许安装“未知来源的应用”。在“设置”中打开“来自未知来源”的选项。 UPD: As of Oct 2018, Telegram X for iOS has replaced the older Goal-C centered client. If You are looking for the ideal iOS working experience, switch to the most crucial Telegram application. 安装过程中出现错误：如果在安装过程中出现错误，可能是由于系统资源不足或防... https://www.telegram-x.com/