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。 The inner framework of Telegram X for iOS is also a lot better optimized for that things that are envisioned of the Telegram app in 2018 and further than. Just as with X for Android, today's X launch for iOS is the beginning of an extended journey. https://www.telegram-x.com/