Regarding Android: I use /e/OS as operating system on my daily mobile phone. https://e.foundation/ 

/e/OS is based on LineageOS, which in turn is based on Adroid Open Source Platform (AOSP). /e/OS is an (almost) deGoogled version of Android. 

In general, /e/OS works well for me. But still, some apps do not work fully or not at all. So unfortunately I need a backup phone for some purposes. Not unlikely are issues related to microG which replaces Google services, but cannot mimic it in every detail. Despite issues, I enjoy to use an alternative to the very non-free softwares iOS and Google-Android.