Now I am going to give some tips to buy a smart phone.i am going to consider my experience, my friends ideas and experience.when shopping for a smart phone, first choose an operating system and then your own feature requirement and price considerations to find the right model. Learn how to make an informed decision when buying a smart phone and be sure to take consideration the other software needs.First, learn some basic difference b/w operating systemsSecond, determine your price rangeThird, consider the device and software you already ownForth, determine which features suit your needsFifth, consider which apps you want to use, m any popular application Google maps, ms office e etcSixth, choose the operating system.