The phrase refers to methods and sequences, often involving specific button combinations or software tools, used to restore an Android device to its original factory settings, effectively erasing all user data and installed applications. An example would be pressing and holding the power button and volume down button simultaneously on certain Android devices while in recovery mode.
This process is crucial for resolving persistent software issues, preparing a device for resale, or removing malicious software that cannot be eliminated through conventional means. Historically, accessing this functionality required technical expertise; however, manufacturers have increasingly provided user-friendly interfaces to initiate such a reset.