Hello.Mi max is the very big screen and smart mobile phone. This mobile is 6.4 screen size so screen very large.This mobile internal capacity is 32gb and also external hybrid slot so more increase capacity.This mobile se very nice.i have used this mobile so easly.This mobile battery are also so bigger and High capacity.They Mobile battery are 4850 MaH built-in battery.2.5D curved glass display is power by an Hexa-core snapdragon 650 Run On MIUI 8 based on Android 6.0 ( Marshmallow) .