This phone is nice to a smat phone and fricesse is so good and mi a1 is best phone is in India an system is 4Gb ram and internal memory 64Gb and memory card support for 128 gb and phone system is android 7.2 octa core processor and so amazing phone by bettry is 3080 Mah and so amazing phone by phone is best sell phone in India system is very very good I am use xiaomi phone in 6 month so cool phone.