The USB Debugging and Developer Options are hidden in latest Android 4.2 Jelly Bean. If you want to use that options, manually activate it.
In gingerbread it is placed in Settings> Applications > Development > USB Debugging. And ICS it is placed in Settings > Developer Options > USB Debugging. But, after upgrading it to 4.2 it is missing.
- Go to – Settings > About phone.
- Then move on to Build number option
- Tap on Build number repeatedly about 7 times.
- This is enough.
- After touching 7th time you will see a message that, “you are now a developer”.
Now the option will be placed in Settings menu. Normally it placed under System in Settings menu. Then you can enable it in Developer Options and Android Debugging.