88% of iOS 9-ready devices now have it installed, says Apple

While the major mobile operating systems have their share of pros and cons, it cannot be denied that when it comes to ease of updates in the mobile space, iOS is king. Where Android's device fragmentation and Windows' general lack of development mean that many users can be left waiting, iPhone and iPad owners generally avoid such tedium. New iOS iterations usually become available to all compatible devices right away — sans the carrier and third-party OEM interventions that can be oh-so frustrating to the Android community.