<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] Here are some custom Android operating system (ROMs) that are privacy focused.

* LineageOS - A free and open-source operating system for various devices, based on the Android mobile platform. LineageOS is designed to protect user privacy by preventing data collection.

* Replicant - A free and open source operating system based on Android. It is designed to protect user privacy, and to make sure that the user has full control over the device.

* CopperheadOS - A privacy-focused operating system based on the Android Open Source Project (AOSP). CopperheadOS is designed to provide improved security and privacy over stock Android devices.

* GrapheneOS - A free and open source operating system designed to provide enhanced security and privacy features. GrapheneOS is based on the Android Open Source Project (AOSP).

I hope this helps you find the right custom Android operating system for your device!</s>