Samsung Galaxy S4 has a 5″ 1080p Super AMOLED display (PenTile 441 ppi), a pseudo octa-core Samsung Exynos 5410, 2 gigs of RAM, up to 64 gigs of storage, LTE connectivity, and a 2600 mAh battery. Furthermore, the device features additional features such as floating touch and a 13 MP shooter featuring a revamped camera interface.
Samsung devices have started receiving Android Lollipop OTA updates. Its not been a long time since the update but XDA developer Rubbaband has found out a way to install custom recovery (PhilZ touch recovery) on the Galaxy S4. Using this recovery, the S4 can be rooted. Follow the guide given below to install the recovery.