隨著人口增加與消費型態的改變使電子廢棄物(E-Waste)成為增加速率最快且毒性最高的都市固體廢棄物(Clean Production Action, 2009)。由於手機的高丟棄量與低回收比例，在天然資源缺乏與廢棄物處理逐漸困難的現代社會中，手機產業的綠化儼然已成目前產業界亟需面對的問題。
　　目前產業界針對綠色產品/手機相關研究，集中在環保材質與製程方面的突破，少有消費者意見參與。現階段消費者與產品之相關研究，多集中於購前之行銷與產品定位與購後行為上，以刺激消費，少有於設計過程中加入使用者汰換產品要素的研究。
　　本研究認為消費者購買後至丟棄產品前這段產品的使用期，才是產品發揮其真正價值的時間，亦是決定產品使用年限的關鍵。因此希望藉由結合手機頻繁淘汰造成汙染的現況、手機產業的綠化需求與消費者主導市場走向的趨勢，進行以消費者態度為基礎的手機過時因素研究，期望能於各態度與過時性之相關性中，找出可能的設計切入點，以提供製造者進行永續手機開發的新方向。
　　透過消費者手機使用經驗、價值觀、綠色消費態度、過時性要素的問卷調查，可歸納出以下幾點給設計界之建議：
1.各消費者背景與態度族群對過時性要素之認知態度之間，部分具有顯著差異或相關，可以依此作為市場區隔工具。
2.相較於其他態度，過時性態度對消費者之使用年限上呈現較顯著之相關性。業界可以本研究之過時基本架構與此相關性為基礎，根據其專業建立更完整的預測模組，以輔助進行產品設計與定位。
3.良善價值觀與綠色消費態度高認同者，易受各過時性要素影響而想更換手機。推測現今具環境保護意識之消費者，同時亦追求生活品質與享受；或可能尚未將其良善/綠色價值觀與手機更換帶來的環境汙染觀念連結。本研究根據以上兩點可能原因，提出手機構件之相容項提高之部分更新概念，嘗試減少全體更新帶來的高汙染性，並兼顧消費者目前對更新產品的追求。

As the population increases and consumption patterns change, E-Waste becomes the fastest increased and the highest toxicity waste of municipal solid waste (Clean Production Action, 2009). The high volume of discarded mobile phones with low recycling rate in this morden society which is lacking of natural resources and waste management, makes sustainablily of mobile phones as an important issue to mobile industry.
Researches in green products / mobile phones often focused on environmentally friendly materials and processes with little consumer participation. However, current consumer research of product design mainly focused on pre-purchase marketing, product positioning and after-purchase behavior to stimulate consumption. There are few research on design process which explore the replacement elements of products.
This research considers that the period between consumers’ purchase and discard is the time that a product can present its true value, and also an important key to product’s life cycle. Therefore, by combining frequent replacement and high pollution of mobile phones, sustainable development of mobile industy, and the trend of consumer-driven market, a study on consumer–based obsolescence of mobile phones is conducted. Through an investigation questionnaire on uer experience, values, green consumption and obsolescence factors, here are three main suggestions for product design can be made as follows:
1.The significant differences and strong correlation between consumer background and attitudes can be used as a market segmentation tool.
2.Comparing to the other attitudes, obsolescence attitude shows a more significant correlation to mobile’s life. Industies can leverage on this obsolescence structure and correlation with its specialty and resources to bring out an overall forecast module for product poaitioning and design.
3.Consumers with goodness values and high green-consumption attitude are easy to be affected by most of the obsolescence factors to replace their mobile phones. This phenomenon may be related to two possible speculations: (1) Consumers with goodness value or green consumption awareness also have tendency to pursuit a quality of life and enjoyment. (2) They didn’t have a congnitive connection between their green attitude and hidden harm of mobile replacement. With these regards, this research would suggest manufactors to raise the compatibility of key components to allow consumers to proceed a component update. Try to reduce the pollution from replacing a whole-product, and in the meantime give consideration to consumers’ pursuit of newer products.

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