Phones and more

Android is built on the AOSP project. You can access your phone, or tablet, using the Android SDK to access Android Debug Tooling, adb, tooling in the terminal. This is how you would commonly perform basic backups, access device folders in your file manager, and perform rom flashing.

ROMs and alternatives to stock

Stock being the system how it arrives by default from the manufacturer. Alternatives include:

LineageOS, which most other projects are based off.

crDroid, a feature rich variation of LineageOS

GrapheneOS, designed almost exclusively for the Google Pixel line. Fork of Copperhead, built for security sandboxing through user profiles, and remains supported while phones are still under Google's "seven years of updates" coverage.

e/OS is a degoogled fork of LineageOS

CalyxOS is treated as a competitor to Graphene, with same support length and similar devices. [wp>/wiki/CalyxOS|Wikipedia link]]

DivestOS is a discontinued soft-fork of LineageOS, built to support end-of-life devices.

PostmarketOS is Alpine-based Linux operating system, built explicitly for end-of-life devices: phones, tablets, computers. See their device list.

Resurrecting a dead phone

Samsung Galaxy A21, which was successfully charged and booted for the first time since 2024. Planning to test some custom roms. Open to your suggestions!

LineageOS

crDroid

Unsupported ROMs

PostmarketOS is unsupported

GrapheneOS and CalyxOS are a no.

What should I do with this phone?

Let me know!