annual sales qualify for the App Store Small Business Program, with Apple only taking a 15% fee. Though iOS has far lower market share than Android, its app ecosystem has been described as superior, with higher-quality apps, and more iOS-exclusive releases. Android's version fragmentation, less uniform hardware, and lower app revenues have been cited as key factors. All apps must pass Apple's app review process before being distributed in the App Store. Apple may also stop distributing apps it deems inappropriate. For example, in 2009, Apple rejected the Newspapers app due to The Sun's "obscene" topless Page 3 girls. In 2018, Apple removed Tumblr from the App Store, citing illegal content, causing Tumblr to ban all adult content from their platform. The App Store's review process has been criticized by developers as "frustrating", "anti-competitive", and "asinine". Users can also install native apps outside of the App Store through jailbreaking. Jailbreaking may cause security issues, and is not supported by Apple. , Apple has passed 60 billion app downloads. , there have been over 140 billion app downloads from the App Store. , the App Store has over 2.2million apps for the iPhone. Jailbreaking Apple restricts the installation of unapproved third-party apps and does not allow full access to the iPhone's filesystem. According to Jonathan Zittrain, the emergence of closed devices like the iPhone has made computing more proprietary than it was in the PC era. Jailbreaking allows users to install apps not available on the App Store, customize their device in ways not allowed by Apple, and bypass SIM locks without carrier approval. Some jailbreak tweaks were later copied by Apple and implemented into iOS, like multitasking, widgets, and copy and paste. Apple attempted to use the DMCA to fight jailbreaking; however in 2010, the U.S. found jailbreaking to be legal. Jailbroken iPhones are at higher risk of malware. In the United States, Apple cannot void an iPhone's warranty solely due to jailbreaking. Jailbreaks rely on exploits. Apple has improved the iPhone's hardware and software security, making these exploits harder to find; as a result, recent iPhones cannot currently be jailbroken. Accessibility The iPhone contains a range of accessibility features to support users' visual, auditory, and motor needs. iPhones can notify users through onscreen banners, audio alerts, vibrations, or the LED flash; vibration patterns can be customized by users. Since iOS 15, Siri can read notifications out loud through earphones,