After Cyanogen Inc. announced to close all its services in December 2016. Many Senoir CyanogenMod developers started a new project named LineageOS. LineageOS was able to gain popularity and most of the former CyanogenMod users showed their support for LineageOS. LineageOS this week achieved their first milestone with more than one million users.
LineageOS has become a very popular free and open source operating system which supports both Android based smartphone and tablets. OnePlus One and OnePlus 3/3T are the most popular devices that are supported by LineageOS. Other devices include Galaxy S III, Galaxy S5, Xiaomi Redmi Note 3, Mi 5 and Google Nexus 5.
The good thing about LineageOS is that it support devices which do not get official updates and are abandoned by actual manufacturers of these devices. There are lots of devices which have not received Android Nougat 7.0 updates but LineageOS is even updating some of the old phones.