If you're looking to squeeze every last bit of functionality out of your Samsung smartphone, or you're simply curious to see exactly how deep Android customization goes, then the so-called Note 2 Hidden Settings app is for you...
Source: http://www.phonearena.com/news/Samsung-smartphones-hidden-settings-now-tweakable-through-a-new-app_id46695
Source: http://www.phonearena.com/news/Samsung-smartphones-hidden-settings-now-tweakable-through-a-new-app_id46695