How to enable Diagnostic(DIAG) Mode in ZTE Engage N8000 How to put ZTE Cricket Engage N8000 in Diagnostic(DIAG) Mode. I want to use it in DFS CDMA Tool.
You can do it only if your phone is rooted.

Make sure Qualcomm drivers for your phone are installed in computer.

Enter this in Terminal Emulator in your device:

su
setprop sys.usb.config diag,adb


Note: This will work only if your phone's ramdisk has the appropriate configs enabled for the 'diag,adb' property.
If that didn't work, better open /init.xxxxxxx.usb.rc (xxxxxxx represents your device's codename or chipname or whatever) and check for properties related to 'diag'.