Scroll to System.
Tap System.
Tap About phone.
Scroll to Build number.
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.
Tap the Back button to go back.
Tap Developer options.
Tap or slide the USB debugging switch to ON.
Tap OK.
You've completed the steps!
