How to install the Hydrogen OS V4 launcher on your Android smartphone

Hydrogen OS is an alternative ROM for the OnePlus One and OnePlus Two. Owners of the smartphones can choose between CyanogenMod, Oxygen OS and Hydrogen OS for the first model, but Cyanogen is no-go for the OnePlus Two, at least by official means. You may remember that OnePlus and Cyanogen had a pretty messy "break-up", of sorts, which is the reason why OnePlus went with its own Android ROM. Anyway, what the three roms have in commin is that they are very close to stock Android in look and feel, but with OnePlus' own modifications and touches sprinkled on top, of course.

Anyway, even if they ...