We are aware of the tremendous growth of new mobile phones released in the market every year. The increase in the users’ needs with respect to the new devices is not to be ignored as well. Each product has so many brands with n-number of models and versions.The way the users choose to buy these products is perplexing. For example,decision made to buy a new mobile or change to new brand or even continuing the same brand is not an easy task. The user acceptance for any new behavior is very complex. This paper explores all the possible human factors connected to either pleasant or unpleasant user experiences. Various researchstudies discovered that loyalty of the users for a particular brand plays an important role for the success of the product. Long- term usage of the product by a user would have a negative impact, as the user is not willing to switch to other brands and this has a positive impact on the companies. User memory, expectations and experiences are closely knit to understand the user acceptance for choosing a product. A positive emotion such as pleasant user experience is significant because users recommend the products to others based on these emotional experiences. Age plays an important role with respect to user experience. Old age users were not enthusiastic in going for a change as they preferred to continue with the same technology. Cultural aspects of users are interesting to know in understanding the product purchases. There was biased information regarding user’s visual attractiveness and long- term usage memory. Certain studies explored UX curve and user burden scale that was used to analyze user experiences. It was interesting to know sensory characteristics formed a base for both pleasant and unpleasant user experiences. This research will help companies of mobile devices in identifying the various factors (both positive and negative) related to user experiences and behavior. Future research will be conducted in the areas of short-term user experience and in areas where illiteracy prevail. This study will help the companies to improve their product better based on customer satisfaction.