<s>[INST] I want to install a custom Android OS on my phone because I think my current operating system is not privacy friendly. What are some custom Android operating systems that care about my privacy? [/INST] The two most popular alternatives to Android OS is Copperhead OS which is a security focused version of Android and Replicant which is focused more on being Free as in Speech. Richard Stallman endorses Replicant.</s>\ <s>[INST] Who is Richard Stallman? [/INST] Richard Stallman is the founder of the Free Software Foundation, which campaigns for and produces free/libre software, which can be legally shared and modified by anyone.</s>