I am a user of redmi 3s prime and I think battery and heating is the main draw backs of this phone. less battery backup and heating is the issue otherwise performance of this phone is far better then other phones in this range ( even in slightly higher range also) so this phone has a good camera quality which is not provided by samsung and other companies in this range.
Performance of processor is quite good. The phone does not hang. And games which require good speed can also be played easily and comfortably without getting phone hanged.