I have use Mi A1 smart mobile, its very sily looking, it is not slim and very old style, its display is not so hardy, Its display size is so small and its display quality is not full hd supported, its display resulation ls very low quality ess than 2280×1920, its camera quality is so bad with duel flash its camera is not 13 and 16 mp, its camera picture quality is very evil.And its speaker sound is very low and not sweet sound, And its proseccer is not so cool its not nougat posseccer.its working not so smoothly.And its ram is not so short, and its internal storge size is so short less than 120 gb.And its battrey backup is not so long time , its hard working backup lessthan 3 days.and its also fetures are very lowcquality, don’t try to use this bad smart phone.And value for money of this mobile is not so perfect.