SO redmi 2 prime is the best you get at this price. I myself bought this phone 6 months ago and it is working fine till date. It has one of the best cameras with real fast focusing speed and with 2gb ram 16gb internal memory which is expandable.This phone is a dual sim phone and comes with kitkat os initially but lolipop is available to update.MIUI7 gives you one of the best privacy features so this phone is good in conserving yout privacyThe biggest boost of this phone is that it is 4g and on above it you can update it to VoLTE feature.Its battery life is pretty turn off pint for this. With capacity of 2200Mah its battery doesnt last for a entire day.The major problem being faced is the low sensitivity of the mic, the mic doesnt work well. So overall this is the best phone you get in this segment.