Actually iOS market share in the US was 40%. Apple's share actually grew, in a quarter before new iPhones and iPads. Anroid declined in the same quarter. Android has more or less peaked in the US while Apple has continued to grow. The massive growth Android got from people going from feature phones to mostly low-end Android phones is over. Apple's market share will spike in the holiday quarter and will continue to incrementally increase their installed base. In 2-3 years Apple and Android will have a more or less equal installed base.
http://thenextweb.com/mobile/2013/10/04/comscore-apple-takes... https://twitter.com/asymco/status/386207186801917952