Unlike other android that you just go to settings ,scroll down to app and open the app ,then see your developer option,and your debug mode, or settings developers option and see your debug mode,is different here on nexus 4 because it is hidden ,that is why this article come up,after reading this you will be able to learn how to find and turn on usb debugging mode on Nexus 4.
There’s something missing on your brand new Samsung Galaxy S4, and if you’re a SoftModder like me, you know exactly what it is already. If you don’t know, keep reading, because you should—anyone who wants a better Android experience should.
DEVELOPERS OPTION :
To find and turn on usb debugging on nexus 4 you have to learn the process to reach the developers option.
These options allow you to quickly access ADB settings, USB debugging, animation scales, and various monitoring tools for your device. It’s a must have for SoftModders.
- See more at: http://.com/how-to-find-and-turn-on-usb-debugging-mode-on-nexus-4/#sthash.pUiU9IvX.dpuf

Go ahead, scroll down to the bottom of your Settings page and see for yourself. Nada. They thought it was best to remove the menu in order to prevent newbs from screwing up their devices.
But We’re Not Newbs
Luckily, it’s not gone forever—it’s just hiding.
To unlock the Dev Options menu, go to Settings -> About Device and scroll down to the “Build Number.”
- See more at: http://.com/how-to-find-and-turn-on-usb-debugging-mode-on-nexus-4/#sthash.pUiU9IvX.dpuf