Login to the XT official website and enter the APP download page at https://www.xt.com/appstore
Scan the QR code and choose "iPhone version" or "Android version" according to your mobile phone to complete the download.
Reminder: To avoid the problems caused by device for each IOS user, please download the test software TestFlight and before downloading the APP.
If you have any questions, please refer to the detailed tutorial:
https://testflash.apple.com/join/yyhpg2ka