Phone OS Liberation
Replaces: Stock Android with Google services
Replace stock Android with a de-Googled operating system like GrapheneOS or /e/OS to remove Google services entirely.
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Phase
Major Lifestyle Migration — high commitment, disruptive
General
GrapheneOS (Pixel phones only, maximum security) or /e/OS (Murena, many devices including Fairphone, easier setup). Both are de-Googled Android with FOSS app store. /e/OS has an easy installer for Fairphone. This is the "get off Google" path for someone with a Fairphone.