Enabling Developer Mode in Nexus 4

To debug android application in real handset, we need to enable USB debugging on the phone. This option appear in "Settings" -> "Developer Options".

But I couldn't found "Developer Options" in Nexus 4. Then this is how to make "Developer options" shown in "Settings":

1. "Settings" -> "About phone",
2. press "Build number" several times (I read some website it need to be pressed 7 times) until there are message like "you've enabled the developer mode",
3. now you can see there are "Developer Options" in "Settings".

Q.E.D