From the Settings screen, scroll to and tap About phone.
Scroll to Software information.
Tap Software information.
Tap Build number seven times.
You may be prompted to enter your device PIN or password. When Developer options has been enabled successfully, you will see a message at the bottom of the screen which states Developer mode has been enabled.
Tap OK.
Scroll to Developer options.
Tap Developer options.
Scroll to USB debugging.
Tap or slide the USB debugging switch to ON.
Tap OK.
You've completed the steps!
