Modifications to the core operating system of Android devices, created by developers outside of Google and device manufacturers, offer alternatives to the stock experience. These alternative distributions are often built with the aim of enhancing performance, adding features, or extending the lifespan of older devices. For example, a user might install one to gain access to a more streamlined interface or to receive security updates on a phone no longer supported by the original manufacturer.
The appeal of these system-level modifications lies in their potential to unlock previously unavailable functionality and optimize the device to individual user preferences. Historically, the development community has contributed significantly to keeping older hardware relevant, thereby reducing electronic waste. The availability of these modifications provides users with greater control over their devices and promotes a more open mobile ecosystem.