Bootloader unlocking
Unlocking the bootloader of a smartphone allows the user to install an alternative system on the device, also known as a custom ROM.[1]
Alternative Android-based Operating Systems
These include, but are not limited to:
- GrapheneOS
- IodéOS
- /e/OS
- LineageOS
- CalyxOS
- AOSP (Android Open Source Project) , also known as "stock" Android[2]