Pine64 is designed to run a variety of different Linux-based mobile operating systems. The one considered most “feature complete” (and set to ship on the regular release of the handset) is Manjaro ARM with Plasma mobile.

What phones can run Linux?

Windows Phone devices that already received unofficial Android support, such as the Lumia 520, 525 and 720, might be able to run Linux with full hardware drivers in the future. In general, if you can find an open source Android kernel (e.g. via LineageOS) for your device, booting Linux on it will be much easier.

Can I replace Android with Linux?

Yes, it is possible to replace Android with Linux on a smartphone. Installing Linux on a smartphone will improve privacy and will also provide software updates for a longer duration of time.