Diag Mode
How to enter devices into Diag mode — steps for popular brands and models.
To enable Diagnostic (Diag) mode on a Qualcomm device, you typically need root access or special tools to change the USB configuration.
Common methods include using ADB commands (e.g., setprop sys.usb.config diag,adb or adb reboot ftm),
Entering dialer codes like ##3424# or *#*#717717#*#*, or using specialized software such as DFTPro, Unlocktool and Chimera ..
Video Example using DFTPro Tool: