How to conscience a customer in market, when you introduce your product in market such as a cell phone?

To convincingly introduce a product in the market, first it require grabbing the customer attraction, then the capabilities of explaining the details/features, explanation about the comparative advantages of your product than those prevailing in the market, the definition of the brand value for your product, price advantages--in short it depends upon the salesmanship you possess to attract and convincingly make the customer to buy the product--the quality price and features of your product  play big role in between.