Visibility of the Universal application on iTunes for iPhone and iPad


I have just release a Universal app for iOS, I am able to see the Universal app in iPad apps store but I cannot see the same app in iPhone app store.

My question - Is there a Time difference for visibility of app on iPad and iPhone app store ? How long does it take to get the app visible in iPhone app store ?

Apple has to update the caches for iTunes, it can take between minutes and a day for it to appear.