Fix: iPad Auto-Brightness Not Working

The iPad auto-brightness is not working according to the surrounding light? This is a common issue Apple has yet to fix on iOS 6. While wondering why this hasn't been fixed, there is a simple way to fix it ourselves:

Steps:

1. Tap on Settings > Brightness & Wallpaper.
2. Turn on the Auto-Brightness.
3. Slide the screen brightness to the lowest level.
4. Put your iPad to sleep mode.
5. Wake it up and your iPad has re-calibrated the light sensor and should be working.

This fix works for me. I'm still hoping Apple can fix it in next iOS version, although it doesn't bother me at all.