LineageOS

The F-Droid team published an open letter to Google, supported by 35 organizations, expressing concerns about Google's changes to the Android ecosystem. Many Android users rely on Google for app installations, facing challenges when trying to use alternative app stores or open-source apps without verification. Some developers are shifting to progressive web apps instead of Android. Alternatives to Google's verification system include non-certified Android devices and privacy-focused ROMs like LineageOS or GrapheneOS, but these options come with security vulnerabilities and installation difficulties for most users. Telecom companies impose restrictions on devices to ensure they work on their networks, leading to a reliance on stock software and security updates from Google and manufacturers.