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Jailbreaking is the privilege escalation of an Apple device for the purpose of removing software restrictions imposed by Apple on iOS, iPadOS, tvOS, watchOS, and bridgeOS operating systems. This is typically done by using a series of kernel patches. Jailbreaking permits root access in Apple's mobile operating system, allowing the installation of software that is unavailable through the official Apple App Store. Many types of jailbreaking are available, for different versions. Because Apple publicly disapproves of jailbreaking, Apple has implemented hardware and software fixes to the vulnerabilities used in jailbreaks, meaning that many versions of iOS are not jailbroken immediately. It is analogous to rooting on Android, although software unavailable on Google Play can be installed on Android without rooting; in recent years the unauthorised use of enterprise certificates has led to the emergence of alternative app stores for iOS allowing for the installation of modified or pirated apps without jailbreaking. There are four types of jailbreaks today. These include: Tethered jailbreaks, untethered jaibreaks, semi-tethered jailbreaks, and semi-untethered jailbreaks.

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