Raise building performance

摘要

The other day my son was playing with my smartphone and within seconds had replaced my ringtone with the latest chart number one. As I puzzled over how to return it to normal, it struck me just how easy and intuitive he had found manipulating the phone's settings and needed no training to get the best out of the product. Of course, smartphone manufacturers invest a great deal of time to ensure their customers find the product easy to use and get the best performance out of the capabilities available.