'iOS 5', released last week has become so popular that it is installed in more than 30% of the eligible devices. This does not nclude the iPhone 4 S. This is the information furnished by Localytics, an analytic firm.

iPad2 and iPhone 4 are considered to be the most popular of all Apple products. iPad has the largest rate of installation of the OS as per Localytics.

It confirms the fact that how important is the up-gradation of the OS would be and the realization of it by the users. Apple has made this information known to the public.

However, most of the developers are happy to continue with older versions of the Operating Systems. But when the users exhibit overwhelming support for the new features of iOS 5 and iCloud, the developers have no other go but to support the options.