This changed quickly with the introduction of the Apple iPhone. The iPhone literally decimated Research in Motion's business model and caused the company to restructure several times. Google produces the Android operating system, installed on most non-Apple phones produced by Huawei, Samsung, Sony (SNE), HTC, Lenovo and others. The two biggest players in this space are Apple and Google, with Apple iOS running on its iPhones and iPods, and Google Android running on most competing phones and tablets. Each operating system interfaces with iTunes and Google Play Store respectively, allowing users to purchase music, books, apps and more.