Hello, As i understand standard rom for mi2 is suported. But id like to know what features get lost compared to miui rom? For example will it have same camera application and 90 fps suport soft? Will it run faster , last longer on battery? It is good to have a phone with as simple and small rom as possible i belive as batterys dont last very long on big screen phones and simple rom may be faster. What wifi chip does mi2 use?