Mi4i is realy good phone display of the phone is very good its full hd ips display in 5inch giving a great quality dut drawback is there no extra memory slot and its only 16gb but for uses available only 10 to 11 gb its not enough and battery backup is very good but when we play hd games its geting more hot but not showing any lag in gaming. Earphone sound quality is very very good
Overall the phone is good if ignore his heating issues and memory problem