Mi is a best smart phone. That is my think. Becouse mi smart phone have some not many good things at friest Mi A1 smart phone battry. This is the ammgung. The battry untile one day run when you use internet. The 2nd part is mi smart phone style. Mi smart phone aminly Mi A1 is a coolest stylest smart phone. 3rd finger print lock system was unlock very friest. The next 4th part of this smart phone its displey. This is an hd desplay. High qulyte photo suported. The 6th part of this smart phone is internet speed. So friest speed is provied to you. So every syde of the smart phone Mi A1 is so cool.