Today in our daily life having smart phone is necessary because smart smart phone plays very important role in our life .Before buying a smartphone the users have to check their confriguration and specification .If the the smartphone user have buy a new smartphone the he should check that recommendation, specification, ranking, and online videos of their specification. In my opinion I should suggest you to watch the videos of sharma ji technical , Technical GURUand Gadget to use.If a user wants to compare two smartphone then heshe can go through GSM arena , Gadget 360, and smartprix. And also check by online or offline market. But in my opinion xiaomi smartphone are very good and value for money smart phone