Lenovo Vibe K5 is a mobile or as a gadget. It has 2 Gb ram and battery power is 2750mh. Lenovo Vibe K5 runs on Android version 5.1 called Lollipop Version. I have also Lenovo Vibe K5 mobile and in starting it performed well but as days were going it becomes slow and gives a low performance. Now the day it hanged more than before when I buying it. so, I want to suggest you change its software because of This system has its official software 7.1 Android version called Nought.