The ROM comes courtesy of XDA Developers' senior member GLokin666, but at this point it's nowhere near stable.
Noteworthy issues are non-functional fingerprint scanners and infrared blasters. The camera on the Redmi Note 4 isn't stable under the Android One ROM as well.
Still if you'd like to get a taste of Android One - follow the source link below.
Which ROM is better for now ? 1 Pixel Experience ( Official ) 2 Resurrection Remix ( Official ) 3 LineageOS 15.1 ( Official ) 4 dotOS ( Official ) 5 AospExtended ( Official )
They don't ask for that much, just a phone number. Others mine for data much much more aggressively.
But we dont have to beg to xiaomi, and give all our personal details to unlock bootloader in A1.