In recent years, because the electronic technology progressed unceasingly, the mobile phone product's function with was also progressing, in particular Smartphone, not only had outside the Voice call function, also had functions about camera photography and video recording, video and music downloads and plays, instant video call, copy clerk to process, to send and receive email, GPS navigation, internet explorer and so on. The new product functions of Smartphone have always been announced uninterruptedly, when consumer selects and purchases the Smartphone, regarding these product functions, these product functions is the consumer most takes seriously? How and its relative “The Degree of Perceived Importance” is also? At the same time, when consumer uses Smartphone, these product functions are the consumer uses frequently? How and its relative “The Degree of Real Utilization” also? Therefore, this research uses the convenience sampling questionnaire survey procedure to discuss these questions. This research uses 412 effective questionnaire materials, uses the frequency distribution, the percentage, the T Test, the one-factor analysis of variance and the Pearson correlation analysis carries on the analysis and the examination. The findings discovered: First, the participant “The Degree of Perceived Importance” regarding the Smartphone product function and “The Degree of Real Utilization” the height sorts are: “The voice call function “>” the photo, video and music function”>“the internet function”>” the data and internet connection function”>“the application software function”. Second, regarding the Smartphone participant “use video call”, “ send and receive short text massage”, “browse the network”, “ listen FM radio”, “English to Chinese dictionary”, “audio book”, “AGPS (Assisted Global Positioning System)” and “calendar” and so on functions, there exist remarkable different between “The Degree of Perceived Importance” with “The Degree of Real Utilization”. Third, the different sex, the age, the occupation, the education level and each monthly mean income's participant, when selects and purchases the Smartphone, regarding the product function “The Degree of Perceived Importance” to have the remarkable difference, the different education level's participant, regarding the product function's value degree is: “above research institute” > “university and college” > “senior high school” > “junior high school including below”. Fourth, different sex participant, when use Smartphone, “The Degree of Real Utilization” has the remarkable difference regarding the product function, but disparity in age, occupation, education level and each monthly mean income participant, regarding product function “The Degree of Real Utilization” not remarkable difference.