Google 2011, "The Globe and Mail" reported that Google bid $900 million for 6000 Nortel Networks patents. On August 15, 2011, Google made its largest-ever acquisition to date when it announced that it would acquire Motorola Mobility for $12.5 billion subject to approval from regulators in the United States and Europe. In a post on Google's blog, Google Chief Executive and co-founder Larry Page revealed that the acquisition was a strategic move to strengthen Google's patent portfolio. The company's Android operating system has come under fire in an industry-wide patent battle, as Apple and Microsoft have sued Android device makers such
Fire Phone and Audible Audiobooks. Although the phone uses Android, it does not have Google Play Store pre-installed. As of Fire OS 3.6.8, Google Play and Google Services can be easily sideloaded. An update, Fire OS 3.5.1, brought quick app switching (dubbed "Quick Switch" and accessed by tapping twice on the home button), folders (dubbed "App Grid Collections"), pinning of apps on the home screen, improved photo taking capabilities, sending of high resolution videos via MMS, and improved battery life. Using the four front cameras and the gyroscope, the Fire Phone provides shortcuts based on the orientation of the device. Marketed as