How to enable developers option in your android device?

I really though they are enabled by default but as it turns out it is not. And why should it be ? It of no use for a normal android smart phone user. Why would be care is USB debugging is enabled or not? But we as a developers do. So lets see hoe we can enable developer mode in android.

1. Go to System Settings - > About Phone
2. You will see Build number listed there.
3. Tap on it about 7 times and you must see a toast saying "Developers mode is turned on".
4. Then developers options should be available in your System Settings.

Then you can view all your Developer options including enabling/disabling USB debugging.