From the Settings app, scroll to and tap About phone.
Scroll to and 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.
Tap System.
Scroll to and tap Developer options.
Scroll to and tap or slide the USB debugging switch to ON.
Tap OK.
You've completed the steps!
