Xiaomi Redmi 2 prime mobile finally got new Miui ver 7.2 stable with Lolipop Android 5.1.1 as core.
This update even brings in VOLTE which most users were waiting for as JIO launch is rumored to be near.
In jan 2016 we wrote about how xiaomi is beta testing the new miui rom with lolipop as core and volte capability for redmi 2 prime.
Here are few screenshots of Xiaomi Redmi 2 Prime where you can see android version and volte capability.
