Flyme OS is the most recent custom Android OS developed by the Meizu team. Flyme OS is a heavily modified Android variant based on Android 4.4 and offers a few unique solutions that this Chinese OEM created for their project. And in the eyes of many, this OS is quite beautiful and almost every piece of the ROM and its UI elements have been themed to match Meizu’s philosophy. The Meizu team has created the Flyme OS for their MX smartphone line. Previously we saw its availability for the Nexus 5. Now Flyme OS is also available for Galaxy S4 i9500. Follow the instructions given below to install Flyme OS on the S4.