本研究希望就兩大部分來討論智慧型手機創新的經營模式。第一，以多代產品來應對極短的產品生命週期。現今之創新科技產品具有極高之技術替換率，單代擴散模型已無法符合目前預測需求，因此本研究使用多代創新擴散模型來適配科技產品。第二，善用間接網路外部性來刺激銷售。間接網路外部性又被稱為「交叉產品的網路外部性」（Cross-Product Network Externalities）他利用正向的互補能量創造更大的網絡效應。例如Apple Inc.利用龐大的應用軟體數量來帶動手機銷售量，因此本研究選用Apple Inc.2007年至2011年推出至各代iPhone產品為實證研究對象。
研究結果分為兩部分。第一，創新科技多代產品不適用於多代擴散模型。創新多代產品屬於極端消費性電子商品，他具有極高之技術替換率，導致產品生命週期非常短，使得第二代產品無法在前代產品尚未飽和時即導入市場，因此破壞了Fisher & Pry (1971)多代擴散的基本假設，在匯整其他相關研究後，本研究認為創新科技多代產品並不適用於多代擴散模型。
第二，加入應用軟體數量討論間接網路外部性可有效提升模型解釋及預測能力。本研究將互補品數量架構至動態市場潛量中，而透過修正模型的參數估計值可以了解不同銷售時期下影響產品擴散速度的因素。另一方面，本研究也發現越後代產品達到關鍵多數點以及高鋒點的時間區間會越短，表示企業須持續改善，以求在更短的時間下推出更新更符合顧客需求的產品，而行銷及研發人員則需在不同時間點做出不同決策，期望用不同商業模式增加商品銷售量提升公司利潤。

The purposes of study discuss two parts to innovative business model of the smart phone. First, using multi-generation to face the short product life cycle. The innovative technology products have a characteristic of high technical replacement rate, the single diffusion model can not fit. Second, using indirect network externality to increase sales, which is known as ”cross-network externalities". The positive complementary energy will create a larger network effect toward product sales. This study chooses iPhone which is introduced by Apple Inc. for the empirical study collected sales data from 2007 to 2011.
The results of this research could be discussed from two dimensions. First, Innovation technology can not be applied to multi-generation diffusion model. The products are extreme consumer electronic goods with a very high technical replacement rate, which results in a very short product life cycle. While the second-generation products into the market , the previous generation products are not yet saturated .
Second, adding the number of applications to the dynamical market potential to discuss the indirect network externalities, which shows better performances in forecasting long-term sales. On the other hand, the study also found that the time interval of critical mass and peak time will be shortened continually. In conclusion, the enterprise is required to implement continuous improvement to respond to different needs of customers, and use different business models to enhance market sales and corporate profits.

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