Replicant

[Mark Wieder]

The FSF has started fundraising to expand the reach of Replicant, an
open-source version of Android. Currently running on 10 mobile
devices, Replicant replaces the non-OSS parts of the Android operating
system with free replacements. F-Droid is also available, and can be
installed on any Android system now.

https://www.fsf.org/blogs/community/donate-to-replicant-and-support-free-software-on-mobile-devices
https://f-droid.org/

-- 
-Mark Wieder
 mwieder at ahsoftware.net