Mi4i having sexy look, and some advanced features but it didn’t work well. The main default of this is it becomes heated after using some time. It has not welly battery backup. It does not provide Volte features. This makes very slow processing after opening more than one application. It doesn’t provide earphone also. It doesn’t provide memory card slot. And the sim slot showing error at some time. And some of the set of this model having camera problems. The sound quality also not so good.