From the Settings app, scroll to About Phone.
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 You are now a developer!
Tap the Back button to go back.
Tap System.
Tap Advanced.
Tap Developer options.
Scroll to USB debugging.
Tap or slide the USB debugging switch to ON.
Tap OK.
You've completed the steps!
