Unlike the initial purchase, the customer's satisfaction has a decisive influence on the repurchase. This study was conducted on university students for their mobile phones. I measured respondents’ expectation before purchase and perceived performance after purchase, then categorized the confirmation types and levels, and examined the effects of these performances on post-satisfaction behavior. As a result of the analysis, satisfaction was higher in the order of positive disconfirmation group, confirmation group, and negative disconfirmation group, and in the confirmation group, the high confirmation group had higher satisfaction than the low confirmation group. Difference of satisfaction was statistically significant, and satisfaction had very strong positive(+) effect on recommendation intention. In addition to add implications of the study, although it was not hypothesized, the respondents’ purchase behavior for mobile phone additionally analyzed. Most of them did not change their telecommunications company, and after searching for information through internet, purchased their mobile phones at offline stores on a 1~3 year replacement cycle. This study presents lots of useful academic/practical implications, besides the interpretation of these results.